399769957166 has 8 divisors (see below), whose sum is σ = 599664111840. Its totient is φ = 199881919888.

The previous prime is 399769957163. The next prime is 399769957177. The reversal of 399769957166 is 661759967993.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399769957163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1362326 + ... + 1629561.

It is an arithmetic number, because the mean of its divisors is an integer number (74958013980).

Almost surely, 2^399769957166 is an apocalyptic number.

399769957166 is a deficient number, since it is larger than the sum of its proper divisors (199894154674).

399769957166 is a wasteful number, since it uses less digits than its factorization.

399769957166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058698.

The product of its digits is 1041624360, while the sum is 77.

The spelling of 399769957166 in words is "three hundred ninety-nine billion, seven hundred sixty-nine million, nine hundred fifty-seven thousand, one hundred sixty-six".