398524894 has 16 divisors (see below), whose sum is σ = 602591760. Its totient is φ = 197665920.

The previous prime is 398524859. The next prime is 398524913. The reversal of 398524894 is 498425893.

It is a super-2 number, since 2×398524894² = 317644182275422472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266902 + ... + 268390.

It is an arithmetic number, because the mean of its divisors is an integer number (37661985).

Almost surely, 2^398524894 is an apocalyptic number.

398524894 is a deficient number, since it is larger than the sum of its proper divisors (204066866).

398524894 is a wasteful number, since it uses less digits than its factorization.

398524894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2475.

The product of its digits is 2488320, while the sum is 52.

The square root of 398524894 is about 19963.0882881382. The cubic root of 398524894 is about 735.8994612492.

Subtracting 398524894 from its reverse (498425893), we obtain a palindrome (99900999).

The spelling of 398524894 in words is "three hundred ninety-eight million, five hundred twenty-four thousand, eight hundred ninety-four".