390158940 has 24 divisors (see below), whose sum is σ = 1092445200. Its totient is φ = 104042368.

The previous prime is 390158933. The next prime is 390158941. The reversal of 390158940 is 49851093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390158941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3251265 + ... + 3251384.

It is an arithmetic number, because the mean of its divisors is an integer number (45518550).

Almost surely, 2^390158940 is an apocalyptic number.

390158940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

390158940 is an abundant number, since it is smaller than the sum of its proper divisors (702286260).

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

390158940 is a wasteful number, since it uses less digits than its factorization.

390158940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6502661 (or 6502659 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 390158940 is about 19752.4413680942. The cubic root of 390158940 is about 730.7135950768.

It can be divided in two parts, 390 and 158940, that added together give a triangular number (159330 = T₅₆₄).

The spelling of 390158940 in words is "three hundred ninety million, one hundred fifty-eight thousand, nine hundred forty".