398890144723 has 8 divisors (see below), whose sum is σ = 455894540640. Its totient is φ = 341890771200.

The previous prime is 398890144649. The next prime is 398890144729. The reversal of 398890144723 is 327441098893.

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 398890144723 - 2²⁵ = 398856590291 is a prime.

It is a super-2 number, since 2×398890144723² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (398890144729) 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, 1083838 + ... + 1404451.

It is an arithmetic number, because the mean of its divisors is an integer number (56986817580).

Almost surely, 2^398890144723 is an apocalyptic number.

398890144723 is a deficient number, since it is larger than the sum of its proper divisors (57004395917).

398890144723 is a wasteful number, since it uses less digits than its factorization.

398890144723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511197.

The product of its (nonzero) digits is 10450944, while the sum is 58.

The spelling of 398890144723 in words is "three hundred ninety-eight billion, eight hundred ninety million, one hundred forty-four thousand, seven hundred twenty-three".