399600911 has 4 divisors (see below), whose sum is σ = 400597824. Its totient is φ = 398604000.

The previous prime is 399600893. The next prime is 399600917. The reversal of 399600911 is 119006993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 119006993 = 7 ⋅17000999.

It is a cyclic number.

It is not a de Polignac number, because 399600911 - 2¹⁸ = 399338767 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 (399600917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497855 + ... + 498656.

It is an arithmetic number, because the mean of its divisors is an integer number (100149456).

Almost surely, 2^399600911 is an apocalyptic number.

399600911 is a deficient number, since it is larger than the sum of its proper divisors (996913).

399600911 is an equidigital number, since it uses as much as digits as its factorization.

399600911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996912.

The product of its (nonzero) digits is 13122, while the sum is 38.

The square root of 399600911 is about 19990.0202851323. The cubic root of 399600911 is about 736.5611754469.

The spelling of 399600911 in words is "three hundred ninety-nine million, six hundred thousand, nine hundred eleven".