398967637 has 8 divisors (see below), whose sum is σ = 421331904. Its totient is φ = 377021568.

The previous prime is 398967629. The next prime is 398967659. The reversal of 398967637 is 736769893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 398967637 - 2³ = 398967629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398967607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102588 + ... + 106405.

It is an arithmetic number, because the mean of its divisors is an integer number (52666488).

Almost surely, 2^398967637 is an apocalyptic number.

It is an amenable number.

398967637 is a deficient number, since it is larger than the sum of its proper divisors (22364267).

398967637 is a wasteful number, since it uses less digits than its factorization.

398967637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209099.

The product of its digits is 10287648, while the sum is 58.

The square root of 398967637 is about 19974.1742507669. The cubic root of 398967637 is about 736.1718773178.

The spelling of 398967637 in words is "three hundred ninety-eight million, nine hundred sixty-seven thousand, six hundred thirty-seven".