3990708 has 60 divisors (see below), whose sum is σ = 10621380. Its totient is φ = 1306368.

The previous prime is 3990689. The next prime is 3990731. The reversal of 3990708 is 8070993.

It can be written as a sum of positive squares in 2 ways, for example, as 1127844 + 2862864 = 1062^2 + 1692^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 35260 + ... + 35372.

It is an arithmetic number, because the mean of its divisors is an integer number (177023).

Almost surely, 2^3990708 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 3990708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5310690).

3990708 is an abundant number, since it is smaller than the sum of its proper divisors (6630672).

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

3990708 is a wasteful number, since it uses less digits than its factorization.

3990708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 3990708 is about 1997.6756493485. The cubic root of 3990708 is about 158.6170921397.

The spelling of 3990708 in words is "three million, nine hundred ninety thousand, seven hundred eight".