385379840 has 120 divisors (see below), whose sum is σ = 962315640. Its totient is φ = 148004864.

The previous prime is 385379807. The next prime is 385379899. The reversal of 385379840 is 48973583.

It is a congruent number.

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, 2152871 + ... + 2153049.

It is an arithmetic number, because the mean of its divisors is an integer number (8019297).

Almost surely, 2^385379840 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 385379840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (481157820).

385379840 is an abundant number, since it is smaller than the sum of its proper divisors (576935800).

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

385379840 is an equidigital number, since it uses as much as digits as its factorization.

385379840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 385379840 is about 19631.0937036121. The cubic root of 385379840 is about 727.7177990873.

The spelling of 385379840 in words is "three hundred eighty-five million, three hundred seventy-nine thousand, eight hundred forty".