398102637 has 16 divisors (see below), whose sum is σ = 535449600. Its totient is φ = 263089200.

The previous prime is 398102629. The next prime is 398102641. The reversal of 398102637 is 736201893.

It is not a de Polignac number, because 398102637 - 2³ = 398102629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 398102595 and 398102604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398102657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188614 + ... + 190712.

It is an arithmetic number, because the mean of its divisors is an integer number (33465600).

Almost surely, 2^398102637 is an apocalyptic number.

It is an amenable number.

398102637 is a deficient number, since it is larger than the sum of its proper divisors (137346963).

398102637 is a wasteful number, since it uses less digits than its factorization.

398102637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 398102637 is about 19952.5095414086. The cubic root of 398102637 is about 735.6394620071.

The spelling of 398102637 in words is "three hundred ninety-eight million, one hundred two thousand, six hundred thirty-seven".