385645884 has 48 divisors (see below), whose sum is σ = 1026069408. Its totient is φ = 111679488.

The previous prime is 385645879. The next prime is 385645913. The reversal of 385645884 is 488546583.

It is a happy number.

It is a super-2 number, since 2×385645884² = 297445495692282912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70057 + ... + 75360.

It is an arithmetic number, because the mean of its divisors is an integer number (21376446).

Almost surely, 2^385645884 is an apocalyptic number.

385645884 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

385645884 is an abundant number, since it is smaller than the sum of its proper divisors (640423524).

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

385645884 is a wasteful number, since it uses less digits than its factorization.

385645884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145454 (or 145452 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 51.

The square root of 385645884 is about 19637.8686216198. The cubic root of 385645884 is about 727.8852186908.

The spelling of 385645884 in words is "three hundred eighty-five million, six hundred forty-five thousand, eight hundred eighty-four".