431673394 has 8 divisors (see below), whose sum is σ = 653921388. Its totient is φ = 213699600.

The previous prime is 431673383. The next prime is 431673409. The reversal of 431673394 is 493376134.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 326344225 + 105329169 = 18065^2 + 10263^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1068297 + ... + 1068700.

Almost surely, 2^431673394 is an apocalyptic number.

431673394 is a deficient number, since it is larger than the sum of its proper divisors (222247994).

431673394 is a wasteful number, since it uses less digits than its factorization.

431673394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137100.

The product of its digits is 163296, while the sum is 40.

The square root of 431673394 is about 20776.7512859927. The cubic root of 431673394 is about 755.7620736777.

The spelling of 431673394 in words is "four hundred thirty-one million, six hundred seventy-three thousand, three hundred ninety-four".