39980736 has 112 divisors (see below), whose sum is σ = 124541280. Its totient is φ = 12533760.

The previous prime is 39980711. The next prime is 39980737. The reversal of 39980736 is 63708993.

It is a happy number.

It is a super-2 number, since 2×39980736² = 3196918502203392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39980691 and 39980700.

It is not an unprimeable number, because it can be changed into a prime (39980737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28696 + ... + 30056.

Almost surely, 2^39980736 is an apocalyptic number.

39980736 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39980736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62270640).

39980736 is an abundant number, since it is smaller than the sum of its proper divisors (84560544).

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

39980736 is a wasteful number, since it uses less digits than its factorization.

39980736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399 (or 1383 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 39980736 is about 6323.0321840079. The cubic root of 39980736 is about 341.9402788917.

The spelling of 39980736 in words is "thirty-nine million, nine hundred eighty thousand, seven hundred thirty-six".