398525937 has 4 divisors (see below), whose sum is σ = 531367920. Its totient is φ = 265683956.

The previous prime is 398525929. The next prime is 398525947. The reversal of 398525937 is 739525893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 739525893 = 3 ⋅246508631.

It is a cyclic number.

It is not a de Polignac number, because 398525937 - 2³ = 398525929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 398525937.

It is not an unprimeable number, because it can be changed into a prime (398525947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66420987 + ... + 66420992.

It is an arithmetic number, because the mean of its divisors is an integer number (132841980).

Almost surely, 2^398525937 is an apocalyptic number.

It is an amenable number.

398525937 is a deficient number, since it is larger than the sum of its proper divisors (132841983).

398525937 is a wasteful number, since it uses less digits than its factorization.

398525937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132841982.

The product of its digits is 2041200, while the sum is 51.

The square root of 398525937 is about 19963.1144113337. The cubic root of 398525937 is about 735.9001032354.

The spelling of 398525937 in words is "three hundred ninety-eight million, five hundred twenty-five thousand, nine hundred thirty-seven".