385929980 has 24 divisors (see below), whose sum is σ = 832358688. Its totient is φ = 150199488.

The previous prime is 385929977. The next prime is 385929991. The reversal of 385929980 is 89929583.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260024 + ... + 261503.

It is an arithmetic number, because the mean of its divisors is an integer number (34681612).

Almost surely, 2^385929980 is an apocalyptic number.

It is an amenable number.

385929980 is an abundant number, since it is smaller than the sum of its proper divisors (446428708).

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

385929980 is a wasteful number, since it uses less digits than its factorization.

385929980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521573 (or 521571 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 53.

The square root of 385929980 is about 19645.1006614881. The cubic root of 385929980 is about 728.0639132995.

The spelling of 385929980 in words is "three hundred eighty-five million, nine hundred twenty-nine thousand, nine hundred eighty".