39965552 has 40 divisors (see below), whose sum is σ = 85379952. Its totient is φ = 17971200.

The previous prime is 39965491. The next prime is 39965561. The reversal of 39965552 is 25556993.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15902 + ... + 18242.

Almost surely, 2^39965552 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 39965552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42689976).

39965552 is an abundant number, since it is smaller than the sum of its proper divisors (45414400).

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

39965552 is a wasteful number, since it uses less digits than its factorization.

39965552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457 (or 2451 counting only the distinct ones).

The product of its digits is 364500, while the sum is 44.

The square root of 39965552 is about 6321.8313802252. The cubic root of 39965552 is about 341.8969857199.

The spelling of 39965552 in words is "thirty-nine million, nine hundred sixty-five thousand, five hundred fifty-two".