399960911 has 8 divisors (see below), whose sum is σ = 457906080. Its totient is φ = 342217728.

The previous prime is 399960907. The next prime is 399960917. The reversal of 399960911 is 119069993.

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

It is a cyclic number.

It is not a de Polignac number, because 399960911 - 2² = 399960907 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 (399960917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46226 + ... + 54191.

It is an arithmetic number, because the mean of its divisors is an integer number (57238260).

Almost surely, 2^399960911 is an apocalyptic number.

399960911 is a deficient number, since it is larger than the sum of its proper divisors (57945169).

399960911 is a wasteful number, since it uses less digits than its factorization.

399960911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100993.

The product of its (nonzero) digits is 118098, while the sum is 47.

The square root of 399960911 is about 19999.0227511246. The cubic root of 399960911 is about 736.7822980950.

The spelling of 399960911 in words is "three hundred ninety-nine million, nine hundred sixty thousand, nine hundred eleven".