398924251069 has 4 divisors (see below), whose sum is σ = 398933320096. Its totient is φ = 398915182044.

The previous prime is 398924251049. The next prime is 398924251127. The reversal of 398924251069 is 960152429893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 398924251069 - 2⁷ = 398924250941 is a prime.

It is a super-2 number, since 2×398924251069² (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 (398924251049) 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, 4468209 + ... + 4556614.

It is an arithmetic number, because the mean of its divisors is an integer number (99733330024).

Almost surely, 2^398924251069 is an apocalyptic number.

It is an amenable number.

398924251069 is a deficient number, since it is larger than the sum of its proper divisors (9069027).

398924251069 is an equidigital number, since it uses as much as digits as its factorization.

398924251069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9069026.

The product of its (nonzero) digits is 8398080, while the sum is 58.

The spelling of 398924251069 in words is "three hundred ninety-eight billion, nine hundred twenty-four million, two hundred fifty-one thousand, sixty-nine".