396918859392 has 576 divisors, whose sum is σ = 1310156527680. Its totient is φ = 119522304000.

The previous prime is 396918859387. The next prime is 396918859411. The reversal of 396918859392 is 293958819693.

It is a happy number.

396918859392 is a `hidden beast` number, since 3 + 9 + 6 + 9 + 188 + 59 + 392 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 396918859392.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 989822392 + ... + 989822792.

It is an arithmetic number, because the mean of its divisors is an integer number (2274577305).

Almost surely, 2^396918859392 is an apocalyptic number.

396918859392 is a gapful number since it is divisible by the number (32) 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 396918859392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (655078263840).

396918859392 is an abundant number, since it is smaller than the sum of its proper divisors (913237668288).

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

396918859392 is a wasteful number, since it uses less digits than its factorization.

396918859392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715 (or 680 counting only the distinct ones).

The product of its digits is 226748160, while the sum is 72.

The spelling of 396918859392 in words is "three hundred ninety-six billion, nine hundred eighteen million, eight hundred fifty-nine thousand, three hundred ninety-two".