398359525 has 24 divisors (see below), whose sum is σ = 507735360. Its totient is φ = 309872640.

The previous prime is 398359519. The next prime is 398359531. The reversal of 398359525 is 525953893.

It is an interprime number because it is at equal distance from previous prime (398359519) and next prime (398359531).

It is a de Polignac number, because none of the positive numbers 2^k-398359525 is a prime.

It is a super-2 number, since 2×398359525² = 317380622316451250, 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 23 ways as a sum of consecutive naturals, for example, 282021 + ... + 283429.

It is an arithmetic number, because the mean of its divisors is an integer number (21155640).

Almost surely, 2^398359525 is an apocalyptic number.

It is an amenable number.

398359525 is a deficient number, since it is larger than the sum of its proper divisors (109375835).

398359525 is a wasteful number, since it uses less digits than its factorization.

398359525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725 (or 1720 counting only the distinct ones).

The product of its digits is 1458000, while the sum is 49.

The square root of 398359525 is about 19958.9459892049. The cubic root of 398359525 is about 735.7976593322.

The spelling of 398359525 in words is "three hundred ninety-eight million, three hundred fifty-nine thousand, five hundred twenty-five".