399990011 has 4 divisors (see below), whose sum is σ = 413782800. Its totient is φ = 386197224.

The previous prime is 399990007. The next prime is 399990043. The reversal of 399990011 is 110099993.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 399990011 - 2² = 399990007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399990001) 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, 6896351 + ... + 6896408.

It is an arithmetic number, because the mean of its divisors is an integer number (103445700).

Almost surely, 2^399990011 is an apocalyptic number.

399990011 is a deficient number, since it is larger than the sum of its proper divisors (13792789).

399990011 is a wasteful number, since it uses less digits than its factorization.

399990011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13792788.

The product of its (nonzero) digits is 19683, while the sum is 41.

The square root of 399990011 is about 19999.7502734409. The cubic root of 399990011 is about 736.8001663786.

The spelling of 399990011 in words is "three hundred ninety-nine million, nine hundred ninety thousand, eleven".