399758162673 has 4 divisors (see below), whose sum is σ = 533010883568. Its totient is φ = 266505441780.

The previous prime is 399758162669. The next prime is 399758162729. The reversal of 399758162673 is 376261857993.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 399758162673 - 2² = 399758162669 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399758162173) 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, 66626360443 + ... + 66626360448.

It is an arithmetic number, because the mean of its divisors is an integer number (133252720892).

Almost surely, 2^399758162673 is an apocalyptic number.

It is an amenable number.

399758162673 is a deficient number, since it is larger than the sum of its proper divisors (133252720895).

399758162673 is a wasteful number, since it uses less digits than its factorization.

399758162673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133252720894.

The product of its digits is 102876480, while the sum is 66.

The spelling of 399758162673 in words is "three hundred ninety-nine billion, seven hundred fifty-eight million, one hundred sixty-two thousand, six hundred seventy-three".