399042653173 has 8 divisors (see below), whose sum is σ = 401166776480. Its totient is φ = 396921848400.

The previous prime is 399042653153. The next prime is 399042653249. The reversal of 399042653173 is 371356240993.

It is a happy number.

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 399042653173 - 2¹³ = 399042644981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 399042653173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399042653153) 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, 588315 + ... + 1069672.

It is an arithmetic number, because the mean of its divisors is an integer number (50145847060).

Almost surely, 2^399042653173 is an apocalyptic number.

It is an amenable number.

399042653173 is a deficient number, since it is larger than the sum of its proper divisors (2124123307).

399042653173 is a wasteful number, since it uses less digits than its factorization.

399042653173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659267.

The product of its (nonzero) digits is 3674160, while the sum is 52.

The spelling of 399042653173 in words is "three hundred ninety-nine billion, forty-two million, six hundred fifty-three thousand, one hundred seventy-three".