399451201 has 8 divisors (see below), whose sum is σ = 404015040. Its totient is φ = 394900752.

The previous prime is 399451153. The next prime is 399451237. The reversal of 399451201 is 102154993.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-399451201 is a prime.

It is a super-2 number, since 2×399451201² = 319122523960684802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399451901) 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, 64290 + ... + 70228.

It is an arithmetic number, because the mean of its divisors is an integer number (50501880).

Almost surely, 2^399451201 is an apocalyptic number.

It is an amenable number.

399451201 is a deficient number, since it is larger than the sum of its proper divisors (4563839).

399451201 is a wasteful number, since it uses less digits than its factorization.

399451201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6695.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 399451201 is about 19986.2753158261. The cubic root of 399451201 is about 736.4691800382.

The spelling of 399451201 in words is "three hundred ninety-nine million, four hundred fifty-one thousand, two hundred one".