398992299893 has 16 divisors (see below), whose sum is σ = 439598555136. Its totient is φ = 359112528240.

The previous prime is 398992299859. The next prime is 398992299919.

398992299893 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 398992299893 - 2⁶ = 398992299829 is a prime.

It is a super-2 number, since 2×398992299893² (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 (398992299803) 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, 1855430 + ... + 2059272.

It is an arithmetic number, because the mean of its divisors is an integer number (27474909696).

Almost surely, 2^398992299893 is an apocalyptic number.

It is an amenable number.

398992299893 is a deficient number, since it is larger than the sum of its proper divisors (40606255243).

398992299893 is a wasteful number, since it uses less digits than its factorization.

398992299893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205624.

The product of its digits is 1224440064, while the sum is 80.

The spelling of 398992299893 in words is "three hundred ninety-eight billion, nine hundred ninety-two million, two hundred ninety-nine thousand, eight hundred ninety-three".