398530492 has 6 divisors (see below), whose sum is σ = 697428368. Its totient is φ = 199265244.

The previous prime is 398530481. The next prime is 398530501. The reversal of 398530492 is 294035893.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49816308 + ... + 49816315.

Almost surely, 2^398530492 is an apocalyptic number.

It is an amenable number.

398530492 is a deficient number, since it is larger than the sum of its proper divisors (298897876).

398530492 is a wasteful number, since it uses less digits than its factorization.

398530492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99632627 (or 99632625 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 398530492 is about 19963.2284964131. The cubic root of 398530492 is about 735.9029069109.

The spelling of 398530492 in words is "three hundred ninety-eight million, five hundred thirty thousand, four hundred ninety-two".