386909250 has 128 divisors (see below), whose sum is σ = 1188794880. Its totient is φ = 81619200.

The previous prime is 386909167. The next prime is 386909267. The reversal of 386909250 is 52909683.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 63 ways as a sum of consecutive naturals, for example, 65416 + ... + 71084.

It is an arithmetic number, because the mean of its divisors is an integer number (9287460).

Almost surely, 2^386909250 is an apocalyptic number.

386909250 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 386909250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594397440).

386909250 is an abundant number, since it is smaller than the sum of its proper divisors (801885630).

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

386909250 is a wasteful number, since it uses less digits than its factorization.

386909250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5709 (or 5699 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 386909250 is about 19670.0088967951. The cubic root of 386909250 is about 728.6791967239.

The spelling of 386909250 in words is "three hundred eighty-six million, nine hundred nine thousand, two hundred fifty".