394498431 has 20 divisors (see below), whose sum is σ = 589898232. Its totient is φ = 262737648.

The previous prime is 394498427. The next prime is 394498439. The reversal of 394498431 is 134894493.

It is a happy number.

It is not a de Polignac number, because 394498431 - 2² = 394498427 is a prime.

It is a super-2 number, since 2×394498431² = 311258024122923522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394498439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 113881 + ... + 117293.

Almost surely, 2^394498431 is an apocalyptic number.

394498431 is a deficient number, since it is larger than the sum of its proper divisors (195399801).

394498431 is a wasteful number, since it uses less digits than its factorization.

394498431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4852 (or 4843 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 394498431 is about 19861.9845685168. The cubic root of 394498431 is about 733.4127011665.

The spelling of 394498431 in words is "three hundred ninety-four million, four hundred ninety-eight thousand, four hundred thirty-one".