398726037 has 16 divisors (see below), whose sum is σ = 595937280. Its totient is φ = 263462976.

The previous prime is 398726021. The next prime is 398726063. The reversal of 398726037 is 730627893.

It is a happy number.

398726037 is a `hidden beast` number, since 39 + 8 + 7 + 2 + 603 + 7 = 666.

It is not a de Polignac number, because 398726037 - 2⁴ = 398726021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 398725983 and 398726001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398728037) 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, 62293 + ... + 68394.

It is an arithmetic number, because the mean of its divisors is an integer number (37246080).

Almost surely, 2^398726037 is an apocalyptic number.

It is an amenable number.

398726037 is a deficient number, since it is larger than the sum of its proper divisors (197211243).

398726037 is a wasteful number, since it uses less digits than its factorization.

398726037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130809 (or 130803 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 398726037 is about 19968.1255254468. The cubic root of 398726037 is about 736.0232478528.

The spelling of 398726037 in words is "three hundred ninety-eight million, seven hundred twenty-six thousand, thirty-seven".