386699040 has 432 divisors, whose sum is σ = 1640253888. Its totient is φ = 81229824.

The previous prime is 386699029. The next prime is 386699057. The reversal of 386699040 is 40996683.

It is a super-2 number, since 2×386699040² = 299072295073843200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1703407 + ... + 1703633.

It is an arithmetic number, because the mean of its divisors is an integer number (3796884).

Almost surely, 2^386699040 is an apocalyptic number.

386699040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 386699040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (820126944).

386699040 is an abundant number, since it is smaller than the sum of its proper divisors (1253554848).

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

386699040 is a wasteful number, since it uses less digits than its factorization.

386699040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 386699040 is about 19664.6647568678. The cubic root of 386699040 is about 728.5472076311.

The spelling of 386699040 in words is "three hundred eighty-six million, six hundred ninety-nine thousand, forty".