389135091408 has 160 divisors (see below), whose sum is σ = 1175720749056. Its totient is φ = 108602018304.

The previous prime is 389135091407. The next prime is 389135091409. The reversal of 389135091408 is 804190531983.

It is an interprime number because it is at equal distance from previous prime (389135091407) and next prime (389135091409).

It is a super-2 number, since 2×389135091408² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389135091407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3994285 + ... + 4090547.

Almost surely, 2^389135091408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389135091408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (587860374528).

389135091408 is an abundant number, since it is smaller than the sum of its proper divisors (786585657648).

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

389135091408 is a wasteful number, since it uses less digits than its factorization.

389135091408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96561 (or 96555 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 51.

The spelling of 389135091408 in words is "three hundred eighty-nine billion, one hundred thirty-five million, ninety-one thousand, four hundred eight".