398270633 has 4 divisors (see below), whose sum is σ = 399158100. Its totient is φ = 397383168.

The previous prime is 398270623. The next prime is 398270657. The reversal of 398270633 is 336072893.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 281803369 + 116467264 = 16787^2 + 10792^2 .

It is a cyclic number.

It is not a de Polignac number, because 398270633 - 2¹⁰ = 398269609 is a prime.

It is a super-2 number, since 2×398270633² = 317238994220441378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398270623) 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, 443060 + ... + 443957.

It is an arithmetic number, because the mean of its divisors is an integer number (99789525).

Almost surely, 2^398270633 is an apocalyptic number.

It is an amenable number.

398270633 is a deficient number, since it is larger than the sum of its proper divisors (887467).

398270633 is an equidigital number, since it uses as much as digits as its factorization.

398270633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887466.

The product of its (nonzero) digits is 163296, while the sum is 41.

The square root of 398270633 is about 19956.7189938627. The cubic root of 398270633 is about 735.7429253653.

The spelling of 398270633 in words is "three hundred ninety-eight million, two hundred seventy thousand, six hundred thirty-three".