399873010 has 8 divisors (see below), whose sum is σ = 719771436. Its totient is φ = 159949200.

The previous prime is 399873007. The next prime is 399873011. The reversal of 399873010 is 10378993.

It can be written as a sum of positive squares in 2 ways, for example, as 398042401 + 1830609 = 19951^2 + 1353^2 .

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

It is not an unprimeable number, because it can be changed into a prime (399873011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19993641 + ... + 19993660.

Almost surely, 2^399873010 is an apocalyptic number.

399873010 is a deficient number, since it is larger than the sum of its proper divisors (319898426).

399873010 is a wasteful number, since it uses less digits than its factorization.

399873010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39987308.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 399873010 is about 19996.8249979841. The cubic root of 399873010 is about 736.7283189485.

The spelling of 399873010 in words is "three hundred ninety-nine million, eight hundred seventy-three thousand, ten".