385390992 has 80 divisors (see below), whose sum is σ = 1144287872. Its totient is φ = 109486080.

The previous prime is 385390979. The next prime is 385391047. The reversal of 385390992 is 299093583.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57648 + ... + 63984.

Almost surely, 2^385390992 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 385390992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (572143936).

385390992 is an abundant number, since it is smaller than the sum of its proper divisors (758896880).

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

385390992 is a wasteful number, since it uses less digits than its factorization.

385390992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6536 (or 6530 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 48.

The square root of 385390992 is about 19631.3777407496. The cubic root of 385390992 is about 727.7248185088.

The spelling of 385390992 in words is "three hundred eighty-five million, three hundred ninety thousand, nine hundred ninety-two".