3990711 has 4 divisors (see below), whose sum is σ = 5320952. Its totient is φ = 2660472.

The previous prime is 3990689. The next prime is 3990731. The reversal of 3990711 is 1170993.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3990711 - 2¹⁹ = 3466423 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665116 + ... + 665121.

It is an arithmetic number, because the mean of its divisors is an integer number (1330238).

Almost surely, 2^3990711 is an apocalyptic number.

3990711 is a deficient number, since it is larger than the sum of its proper divisors (1330241).

3990711 is a wasteful number, since it uses less digits than its factorization.

3990711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330240.

The product of its (nonzero) digits is 1701, while the sum is 30.

The square root of 3990711 is about 1997.6764002210. The cubic root of 3990711 is about 158.6171318863.

The spelling of 3990711 in words is "three million, nine hundred ninety thousand, seven hundred eleven".