399402941 has 8 divisors (see below), whose sum is σ = 457202880. Its totient is φ = 341788608.

The previous prime is 399402931. The next prime is 399402953. The reversal of 399402941 is 149204993.

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

It is not a de Polignac number, because 399402941 - 2¹⁰ = 399401917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399402931) 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, 41756 + ... + 50421.

It is an arithmetic number, because the mean of its divisors is an integer number (57150360).

Almost surely, 2^399402941 is an apocalyptic number.

It is an amenable number.

399402941 is a deficient number, since it is larger than the sum of its proper divisors (57799939).

399402941 is an equidigital number, since it uses as much as digits as its factorization.

399402941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92803.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 399402941 is about 19985.0679508477. The cubic root of 399402941 is about 736.4395198160.

The spelling of 399402941 in words is "three hundred ninety-nine million, four hundred two thousand, nine hundred forty-one".