39988903941 has 24 divisors (see below), whose sum is σ = 66022324160. Its totient is φ = 22847723136.

The previous prime is 39988903891. The next prime is 39988903943. The reversal of 39988903941 is 14930988993.

It is a happy number.

It is not a de Polignac number, because 39988903941 - 2⁷ = 39988903813 is a prime.

It is a super-2 number, since 2×39988903941² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39988903943) 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 23 ways as a sum of consecutive naturals, for example, 478506 + ... + 555828.

Almost surely, 2^39988903941 is an apocalyptic number.

It is an amenable number.

39988903941 is a deficient number, since it is larger than the sum of its proper divisors (26033420219).

39988903941 is a wasteful number, since it uses less digits than its factorization.

39988903941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85545 (or 85542 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 63.

The spelling of 39988903941 in words is "thirty-nine billion, nine hundred eighty-eight million, nine hundred three thousand, nine hundred forty-one".