390964426 has 8 divisors (see below), whose sum is σ = 588020004. Its totient is φ = 194957760.

The previous prime is 390964403. The next prime is 390964429. The reversal of 390964426 is 624469093.

It can be written as a sum of positive squares in 2 ways, for example, as 362331225 + 28633201 = 19035^2 + 5351^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (390964429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261295 + ... + 262786.

Almost surely, 2^390964426 is an apocalyptic number.

390964426 is a deficient number, since it is larger than the sum of its proper divisors (197055578).

390964426 is a wasteful number, since it uses less digits than its factorization.

390964426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524456.

The product of its (nonzero) digits is 279936, while the sum is 43.

The square root of 390964426 is about 19772.8203855697. The cubic root of 390964426 is about 731.2161039539.

The spelling of 390964426 in words is "three hundred ninety million, nine hundred sixty-four thousand, four hundred twenty-six".