393897088 has 96 divisors (see below), whose sum is σ = 862369200. Its totient is φ = 179112960.

The previous prime is 393897073. The next prime is 393897107. The reversal of 393897088 is 880798393.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2833723 + ... + 2833861.

Almost surely, 2^393897088 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 393897088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (431184600).

393897088 is an abundant number, since it is smaller than the sum of its proper divisors (468472112).

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

393897088 is a wasteful number, since it uses less digits than its factorization.

393897088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 55.

The square root of 393897088 is about 19846.8407561506. The cubic root of 393897088 is about 733.0398590618.

The spelling of 393897088 in words is "three hundred ninety-three million, eight hundred ninety-seven thousand, eighty-eight".