39998474841 has 32 divisors (see below), whose sum is σ = 57843976960. Its totient is φ = 24439221504.

The previous prime is 39998474833. The next prime is 39998474843. The reversal of 39998474841 is 14847489993.

It is a happy number.

It is not a de Polignac number, because 39998474841 - 2³ = 39998474833 is a prime.

It is a super-2 number, since 2×39998474841² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39998474843) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 3325260 + ... + 3337266.

It is an arithmetic number, because the mean of its divisors is an integer number (1807624280).

Almost surely, 2^39998474841 is an apocalyptic number.

It is an amenable number.

39998474841 is a deficient number, since it is larger than the sum of its proper divisors (17845502119).

39998474841 is a wasteful number, since it uses less digits than its factorization.

39998474841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12625.

The product of its digits is 62705664, while the sum is 66.

It can be divided in two parts, 399984 and 74841, that added together give a triangular number (474825 = T₉₇₄).

The spelling of 39998474841 in words is "thirty-nine billion, nine hundred ninety-eight million, four hundred seventy-four thousand, eight hundred forty-one".