39998000026 has 16 divisors (see below), whose sum is σ = 60583498344. Its totient is φ = 19803825664.

The previous prime is 39997999957. The next prime is 39998000041. The reversal of 39998000026 is 62000089993.

It is a happy number.

It is a Cunningham number, because it is equal to 199995²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 11374435801 + 28623564225 = 106651^2 + 169185^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 39998000026.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167256 + ... + 328588.

Almost surely, 2^39998000026 is an apocalyptic number.

39998000026 is a deficient number, since it is larger than the sum of its proper divisors (20585498318).

39998000026 is a wasteful number, since it uses less digits than its factorization.

39998000026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162545.

The product of its (nonzero) digits is 209952, while the sum is 46.

The spelling of 39998000026 in words is "thirty-nine billion, nine hundred ninety-eight million, twenty-six", and thus it is an aban number.