399841370 has 8 divisors (see below), whose sum is σ = 719714484. Its totient is φ = 159936544.

The previous prime is 399841369. The next prime is 399841417. The reversal of 399841370 is 73148993.

It is a happy number.

399841370 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 399480169 + 361201 = 19987^2 + 601^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19992059 + ... + 19992078.

Almost surely, 2^399841370 is an apocalyptic number.

399841370 is a deficient number, since it is larger than the sum of its proper divisors (319873114).

399841370 is a wasteful number, since it uses less digits than its factorization.

399841370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39984144.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 399841370 is about 19996.0338567427. The cubic root of 399841370 is about 736.7088871970.

The spelling of 399841370 in words is "three hundred ninety-nine million, eight hundred forty-one thousand, three hundred seventy".