431088394 has 12 divisors (see below), whose sum is σ = 710761842. Its totient is φ = 195949160.

The previous prime is 431088389. The next prime is 431088407. The reversal of 431088394 is 493880134.

It can be written as a sum of positive squares in only one way, i.e., 425390625 + 5697769 = 20625^2 + 2387^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 890437 + ... + 890920.

Almost surely, 2^431088394 is an apocalyptic number.

431088394 is a deficient number, since it is larger than the sum of its proper divisors (279673448).

431088394 is a wasteful number, since it uses less digits than its factorization.

431088394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781381 (or 1781370 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 431088394 is about 20762.6682774638. The cubic root of 431088394 is about 755.4205186277.

The spelling of 431088394 in words is "four hundred thirty-one million, eighty-eight thousand, three hundred ninety-four".