399949010 has 8 divisors (see below), whose sum is σ = 719908236. Its totient is φ = 159979600.

The previous prime is 399948911. The next prime is 399949037. The reversal of 399949010 is 10949993.

It can be written as a sum of positive squares in 2 ways, for example, as 379977049 + 19971961 = 19493^2 + 4469^2 .

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, 19997441 + ... + 19997460.

Almost surely, 2^399949010 is an apocalyptic number.

399949010 is a deficient number, since it is larger than the sum of its proper divisors (319959226).

399949010 is a wasteful number, since it uses less digits than its factorization.

399949010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39994908.

The product of its (nonzero) digits is 78732, while the sum is 44.

The square root of 399949010 is about 19998.7252093727. The cubic root of 399949010 is about 736.7749902700.

The spelling of 399949010 in words is "three hundred ninety-nine million, nine hundred forty-nine thousand, ten".