398836961 has 8 divisors (see below), whose sum is σ = 420024000. Its totient is φ = 377669520.

The previous prime is 398836931. The next prime is 398836969. The reversal of 398836961 is 169638893.

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 398836961 - 2¹⁴ = 398820577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398836969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57140 + ... + 63738.

It is an arithmetic number, because the mean of its divisors is an integer number (52503000).

Almost surely, 2^398836961 is an apocalyptic number.

It is an amenable number.

398836961 is a deficient number, since it is larger than the sum of its proper divisors (21187039).

398836961 is a wasteful number, since it uses less digits than its factorization.

398836961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9799.

The product of its digits is 1679616, while the sum is 53.

The square root of 398836961 is about 19970.9028589095. The cubic root of 398836961 is about 736.0914944394.

The spelling of 398836961 in words is "three hundred ninety-eight million, eight hundred thirty-six thousand, nine hundred sixty-one".