3990767 has 8 divisors (see below), whose sum is σ = 4609872. Its totient is φ = 3414400.

The previous prime is 3990761. The next prime is 3990773. The reversal of 3990767 is 7670993.

It is an interprime number because it is at equal distance from previous prime (3990761) and next prime (3990773).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-3990767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990761) 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, 10484 + ... + 10857.

It is an arithmetic number, because the mean of its divisors is an integer number (576234).

Almost surely, 2^3990767 is an apocalyptic number.

3990767 is a deficient number, since it is larger than the sum of its proper divisors (619105).

3990767 is a wasteful number, since it uses less digits than its factorization.

3990767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21369.

The product of its (nonzero) digits is 71442, while the sum is 41.

The square root of 3990767 is about 1997.6904164560. The cubic root of 3990767 is about 158.6178738191.

The spelling of 3990767 in words is "three million, nine hundred ninety thousand, seven hundred sixty-seven".