399043401 has 8 divisors (see below), whose sum is σ = 532276800. Its totient is φ = 265919472.

The previous prime is 399043369. The next prime is 399043427. The reversal of 399043401 is 104340993.

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

It is not a de Polignac number, because 399043401 - 2⁵ = 399043369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (399083401) 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, 18445 + ... + 33738.

It is an arithmetic number, because the mean of its divisors is an integer number (66534600).

Almost surely, 2^399043401 is an apocalyptic number.

It is an amenable number.

399043401 is a deficient number, since it is larger than the sum of its proper divisors (133233399).

399043401 is a wasteful number, since it uses less digits than its factorization.

399043401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54735.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 399043401 is about 19976.0707097267. The cubic root of 399043401 is about 736.2184740763.

The spelling of 399043401 in words is "three hundred ninety-nine million, forty-three thousand, four hundred one".