398722621173 has 16 divisors (see below), whose sum is σ = 538575544320. Its totient is φ = 262345088304.

The previous prime is 398722621079. The next prime is 398722621201. The reversal of 398722621173 is 371126227893.

It is not a de Polignac number, because 398722621173 - 2²¹ = 398720524021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398722661173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257140 + ... + 929282.

It is an arithmetic number, because the mean of its divisors is an integer number (33660971520).

Almost surely, 2^398722621173 is an apocalyptic number.

It is an amenable number.

398722621173 is a deficient number, since it is larger than the sum of its proper divisors (139852923147).

398722621173 is a wasteful number, since it uses less digits than its factorization.

398722621173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674728.

The product of its digits is 1524096, while the sum is 51.

The spelling of 398722621173 in words is "three hundred ninety-eight billion, seven hundred twenty-two million, six hundred twenty-one thousand, one hundred seventy-three".