39956644 has 48 divisors (see below), whose sum is σ = 88861696. Its totient is φ = 15292800.

The previous prime is 39956621. The next prime is 39956669. The reversal of 39956644 is 44665993.

It is a junction number, because it is equal to n+sod(n) for n = 39956594 and 39956603.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9514 + ... + 13054.

Almost surely, 2^39956644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39956644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44430848).

39956644 is an abundant number, since it is smaller than the sum of its proper divisors (48905052).

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

39956644 is a wasteful number, since it uses less digits than its factorization.

39956644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3596 (or 3594 counting only the distinct ones).

The product of its digits is 699840, while the sum is 46.

The square root of 39956644 is about 6321.1267982853. The cubic root of 39956644 is about 341.8715818033.

The spelling of 39956644 in words is "thirty-nine million, nine hundred fifty-six thousand, six hundred forty-four".