399214912669 has 8 divisors (see below), whose sum is σ = 422709522048. Its totient is φ = 375721567680.

The previous prime is 399214912661. The next prime is 399214912693. The reversal of 399214912669 is 966219412993.

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 399214912669 - 2³ = 399214912661 is a prime.

It is a super-2 number, since 2×399214912669² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399214912661) 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, 377454 + ... + 970000.

It is an arithmetic number, because the mean of its divisors is an integer number (52838690256).

Almost surely, 2^399214912669 is an apocalyptic number.

It is an amenable number.

399214912669 is a deficient number, since it is larger than the sum of its proper divisors (23494609379).

399214912669 is a wasteful number, since it uses less digits than its factorization.

399214912669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632195.

The product of its digits is 11337408, while the sum is 61.

The spelling of 399214912669 in words is "three hundred ninety-nine billion, two hundred fourteen million, nine hundred twelve thousand, six hundred sixty-nine".