396639299 has 8 divisors (see below), whose sum is σ = 459687168. Its totient is φ = 335187720.

The previous prime is 396639281. The next prime is 396639319. The reversal of 396639299 is 992936693.

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

It is not a de Polignac number, because 396639299 - 2²⁴ = 379862083 is a prime.

It is a super-2 number, since 2×396639299² = 314645467022422802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396638299) 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, 398537 + ... + 399530.

It is an arithmetic number, because the mean of its divisors is an integer number (57460896).

Almost surely, 2^396639299 is an apocalyptic number.

396639299 is a deficient number, since it is larger than the sum of its proper divisors (63047869).

396639299 is an equidigital number, since it uses as much as digits as its factorization.

396639299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798145.

The product of its digits is 4251528, while the sum is 56.

The square root of 396639299 is about 19915.8052561276. The cubic root of 396639299 is about 734.7370055730.

The spelling of 396639299 in words is "three hundred ninety-six million, six hundred thirty-nine thousand, two hundred ninety-nine".