398504542 has 8 divisors (see below), whose sum is σ = 598338576. Its totient is φ = 199058352.

The previous prime is 398504539. The next prime is 398504551. The reversal of 398504542 is 245405893.

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

It is a junction number, because it is equal to n+sod(n) for n = 398504495 and 398504504.

It is a congruent number.

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, 94378 + ... + 98509.

It is an arithmetic number, because the mean of its divisors is an integer number (74792322).

Almost surely, 2^398504542 is an apocalyptic number.

398504542 is a deficient number, since it is larger than the sum of its proper divisors (199834034).

398504542 is a wasteful number, since it uses less digits than its factorization.

398504542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193922.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 398504542 is about 19962.5785408599. The cubic root of 398504542 is about 735.8869339842.

The spelling of 398504542 in words is "three hundred ninety-eight million, five hundred four thousand, five hundred forty-two".