398869179122 has 18 divisors (see below), whose sum is σ = 608355915687. Its totient is φ = 196138375200.

The previous prime is 398869179101. The next prime is 398869179127. The reversal of 398869179122 is 221971968893.

It can be written as a sum of positive squares in 5 ways, for example, as 122562307921 + 276306871201 = 350089^2 + 525649^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=446581.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398869179127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 54479222 + ... + 54486542.

Almost surely, 2^398869179122 is an apocalyptic number.

398869179122 is a deficient number, since it is larger than the sum of its proper divisors (209486736565).

398869179122 is an frugal number, since it uses more digits than its factorization.

398869179122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14766 (or 7384 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 65.

The spelling of 398869179122 in words is "three hundred ninety-eight billion, eight hundred sixty-nine million, one hundred seventy-nine thousand, one hundred twenty-two".