39999999999998 has 16 divisors (see below), whose sum is σ = 60986510170080. Its totient is φ = 19671194498400.

The previous prime is 39999999999913. The next prime is 40000000000001. The reversal of 39999999999998 is 89999999999993.

It is a super-9 number, since 9×39999999999998⁹ (a number of 124 digits) contains 999999999 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 39999999999998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5229113 + ... + 10360676.

It is an arithmetic number, because the mean of its divisors is an integer number (3811656885630).

Almost surely, 2^{39999999999998} is an apocalyptic number.

39999999999998 is a deficient number, since it is larger than the sum of its proper divisors (20986510170082).

39999999999998 is a wasteful number, since it uses less digits than its factorization.

39999999999998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15610883.

The product of its digits is 6778308875544, while the sum is 119.

It can be divided in two parts, 3 and 9999999999998, that added together give a palindrome (10000000000001).

The spelling of 39999999999998 in words is "thirty-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-eight".