399468371 has 4 divisors (see below), whose sum is σ = 409211544. Its totient is φ = 389725200.

The previous prime is 399468353. The next prime is 399468373. The reversal of 399468371 is 173864993.

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

It is a cyclic number.

It is not a de Polignac number, because 399468371 - 2²⁶ = 332359507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399468373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4871525 + ... + 4871606.

It is an arithmetic number, because the mean of its divisors is an integer number (102302886).

Almost surely, 2^399468371 is an apocalyptic number.

399468371 is a deficient number, since it is larger than the sum of its proper divisors (9743173).

399468371 is an equidigital number, since it uses as much as digits as its factorization.

399468371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9743172.

The product of its digits is 979776, while the sum is 50.

The square root of 399468371 is about 19986.7048559786. The cubic root of 399468371 is about 736.4797320110.

The spelling of 399468371 in words is "three hundred ninety-nine million, four hundred sixty-eight thousand, three hundred seventy-one".