389443977216 has 896 divisors, whose sum is σ = 1423426491360. Its totient is φ = 103960018944.

The previous prime is 389443977203. The next prime is 389443977229. The reversal of 389443977216 is 612779344983.

389443977216 is a `hidden beast` number, since 3 + 89 + 443 + 97 + 7 + 21 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (389443977203) and next prime (389443977229).

It is a tau number, because it is divible by the number of its divisors (896).

It is a super-2 number, since 2×389443977216² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 2842656700 + ... + 2842656836.

Almost surely, 2^389443977216 is an apocalyptic number.

389443977216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389443977216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (711713245680).

389443977216 is an abundant number, since it is smaller than the sum of its proper divisors (1033982514144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389443977216 is an frugal number, since it uses more digits than its factorization.

389443977216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 166 counting only the distinct ones).

The product of its digits is 54867456, while the sum is 63.

The spelling of 389443977216 in words is "three hundred eighty-nine billion, four hundred forty-three million, nine hundred seventy-seven thousand, two hundred sixteen".