398690718239 has 16 divisors (see below), whose sum is σ = 436826304000. Its totient is φ = 360870793920.

The previous prime is 398690718227. The next prime is 398690718269. The reversal of 398690718239 is 932817096893.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398690718239 is a prime.

It is a super-2 number, since 2×398690718239² (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 (398690718269) 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, 29882432 + ... + 29895770.

It is an arithmetic number, because the mean of its divisors is an integer number (27301644000).

Almost surely, 2^398690718239 is an apocalyptic number.

398690718239 is a deficient number, since it is larger than the sum of its proper divisors (38135585761).

398690718239 is a wasteful number, since it uses less digits than its factorization.

398690718239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24958.

The product of its (nonzero) digits is 35271936, while the sum is 65.

The spelling of 398690718239 in words is "three hundred ninety-eight billion, six hundred ninety million, seven hundred eighteen thousand, two hundred thirty-nine".