390742460 has 24 divisors (see below), whose sum is σ = 824456976. Its totient is φ = 155554560.

The previous prime is 390742439. The next prime is 390742463. The reversal of 390742460 is 64247093.

It is a self number, because there is not a number n which added to its sum of digits gives 390742460.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390742463) 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, 42077 + ... + 50516.

It is an arithmetic number, because the mean of its divisors is an integer number (34352374).

Almost surely, 2^390742460 is an apocalyptic number.

It is an amenable number.

390742460 is an abundant number, since it is smaller than the sum of its proper divisors (433714516).

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

390742460 is a wasteful number, since it uses less digits than its factorization.

390742460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92813 (or 92811 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 390742460 is about 19767.2066817747. The cubic root of 390742460 is about 731.0776976367.

The spelling of 390742460 in words is "three hundred ninety million, seven hundred forty-two thousand, four hundred sixty".