396689491430848 has 224 divisors, whose sum is σ = 1001498736038400. Its totient is φ = 154546685153280.

The previous prime is 396689491430831. The next prime is 396689491430861. The reversal of 396689491430848 is 848034194986693.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-2 number, since 2×396689491430848² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8883008136 + ... + 8883052792.

Almost surely, 2^{396689491430848} 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 396689491430848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (500749368019200).

396689491430848 is an abundant number, since it is smaller than the sum of its proper divisors (604809244607552).

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

396689491430848 is a wasteful number, since it uses less digits than its factorization.

396689491430848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81488 (or 81464 counting only the distinct ones).

The product of its (nonzero) digits is 7739670528, while the sum is 82.

The spelling of 396689491430848 in words is "three hundred ninety-six trillion, six hundred eighty-nine billion, four hundred ninety-one million, four hundred thirty thousand, eight hundred forty-eight".