37989616 has 40 divisors (see below), whose sum is σ = 86181984. Its totient is φ = 15882240.

The previous prime is 37989587. The next prime is 37989617. The reversal of 37989616 is 61698973.

It is a self number, because there is not a number n which added to its sum of digits gives 37989616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37989617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456 + ... + 8728.

Almost surely, 2^37989616 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 37989616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43090992).

37989616 is an abundant number, since it is smaller than the sum of its proper divisors (48192368).

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

37989616 is a wasteful number, since it uses less digits than its factorization.

37989616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8329 (or 8323 counting only the distinct ones).

The product of its digits is 489888, while the sum is 49.

The square root of 37989616 is about 6163.5716918034. The cubic root of 37989616 is about 336.1669144228.

The spelling of 37989616 in words is "thirty-seven million, nine hundred eighty-nine thousand, six hundred sixteen".