390390873 has 32 divisors (see below), whose sum is σ = 563853312. Its totient is φ = 239366400.

The previous prime is 390390827. The next prime is 390390881. The reversal of 390390873 is 378093093.

It is a happy number.

It is not a de Polignac number, because 390390873 - 2⁶ = 390390809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390390073) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 473940 + ... + 474762.

It is an arithmetic number, because the mean of its divisors is an integer number (17620416).

Almost surely, 2^390390873 is an apocalyptic number.

It is an amenable number.

390390873 is a deficient number, since it is larger than the sum of its proper divisors (173462439).

390390873 is a wasteful number, since it uses less digits than its factorization.

390390873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 390390873 is about 19758.3114916230. The cubic root of 390390873 is about 730.8583591783.

The spelling of 390390873 in words is "three hundred ninety million, three hundred ninety thousand, eight hundred seventy-three".