390941243 has 16 divisors (see below), whose sum is σ = 489557760. Its totient is φ = 303285600.

The previous prime is 390941233. The next prime is 390941249. The reversal of 390941243 is 342149093.

It is a cyclic number.

It is not a de Polignac number, because 390941243 - 2⁸ = 390940987 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390941249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6548 + ... + 28718.

It is an arithmetic number, because the mean of its divisors is an integer number (30597360).

Almost surely, 2^390941243 is an apocalyptic number.

390941243 is a deficient number, since it is larger than the sum of its proper divisors (98616517).

390941243 is a wasteful number, since it uses less digits than its factorization.

390941243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22418.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 390941243 is about 19772.2341428580. The cubic root of 390941243 is about 731.2016507054.

The spelling of 390941243 in words is "three hundred ninety million, nine hundred forty-one thousand, two hundred forty-three".