39988956 has 24 divisors (see below), whose sum is σ = 106637440. Its totient is φ = 11425392.

The previous prime is 39988951. The next prime is 39989009. The reversal of 39988956 is 65988993.

39988956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 39988896 and 39988905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39988951) 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 7 ways as a sum of consecutive naturals, for example, 237946 + ... + 238113.

Almost surely, 2^39988956 is an apocalyptic number.

It is an amenable number.

39988956 is an abundant number, since it is smaller than the sum of its proper divisors (66648484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39988956 is a wasteful number, since it uses less digits than its factorization.

39988956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476073 (or 476071 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 57.

The square root of 39988956 is about 6323.6821552004. The cubic root of 39988956 is about 341.9637114809.

The spelling of 39988956 in words is "thirty-nine million, nine hundred eighty-eight thousand, nine hundred fifty-six".