390392234 has 4 divisors (see below), whose sum is σ = 585588354. Its totient is φ = 195196116.

The previous prime is 390392209. The next prime is 390392237. The reversal of 390392234 is 432293093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 432293093 = 8053 ⋅53681.

It can be written as a sum of positive squares in only one way, i.e., 326344225 + 64048009 = 18065^2 + 8003^2 .

It is a junction number, because it is equal to n+sod(n) for n = 390392194 and 390392203.

It is not an unprimeable number, because it can be changed into a prime (390392237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97598057 + ... + 97598060.

Almost surely, 2^390392234 is an apocalyptic number.

390392234 is a deficient number, since it is larger than the sum of its proper divisors (195196120).

390392234 is a wasteful number, since it uses less digits than its factorization.

390392234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195196119.

The product of its (nonzero) digits is 34992, while the sum is 35.

The square root of 390392234 is about 19758.3459327951. The cubic root of 390392234 is about 730.8592084955.

The spelling of 390392234 in words is "three hundred ninety million, three hundred ninety-two thousand, two hundred thirty-four".