398844017413 has 4 divisors (see below), whose sum is σ = 422305430220. Its totient is φ = 375382604608.

The previous prime is 398844017401. The next prime is 398844017417. The reversal of 398844017413 is 314710448893.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 288066211524 + 110777805889 = 536718^2 + 332833^2 .

It is a cyclic number.

It is not a de Polignac number, because 398844017413 - 2²¹ = 398841920261 is a prime.

It is a super-2 number, since 2×398844017413² (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 (398844017417) 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, 11730706378 + ... + 11730706411.

It is an arithmetic number, because the mean of its divisors is an integer number (105576357555).

Almost surely, 2^398844017413 is an apocalyptic number.

It is an amenable number.

398844017413 is a deficient number, since it is larger than the sum of its proper divisors (23461412807).

398844017413 is a wasteful number, since it uses less digits than its factorization.

398844017413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23461412806.

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 398844017413 in words is "three hundred ninety-eight billion, eight hundred forty-four million, seventeen thousand, four hundred thirteen".