390425234 has 4 divisors (see below), whose sum is σ = 585637854. Its totient is φ = 195212616.

The previous prime is 390425219. The next prime is 390425239. The reversal of 390425234 is 432524093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 432524093 = 683 ⋅633271.

It can be written as a sum of positive squares in only one way, i.e., 360886009 + 29539225 = 18997^2 + 5435^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 390425234.

It is not an unprimeable number, because it can be changed into a prime (390425239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97606307 + ... + 97606310.

Almost surely, 2^390425234 is an apocalyptic number.

390425234 is a deficient number, since it is larger than the sum of its proper divisors (195212620).

390425234 is a wasteful number, since it uses less digits than its factorization.

390425234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195212619.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 390425234 is about 19759.1810052947. The cubic root of 390425234 is about 730.8798011817.

The spelling of 390425234 in words is "three hundred ninety million, four hundred twenty-five thousand, two hundred thirty-four".