3990167 has 4 divisors (see below), whose sum is σ = 3994536. Its totient is φ = 3985800.

The previous prime is 3990157. The next prime is 3990169. The reversal of 3990167 is 7610993.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7610993 = 13 ⋅585461.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3990167 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 (3990169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233 + ... + 2834.

It is an arithmetic number, because the mean of its divisors is an integer number (998634).

Almost surely, 2^3990167 is an apocalyptic number.

3990167 is a deficient number, since it is larger than the sum of its proper divisors (4369).

3990167 is a wasteful number, since it uses less digits than its factorization.

3990167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4368.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 3990167 is about 1997.5402373920. The cubic root of 3990167 is about 158.6099241781.

The spelling of 3990167 in words is "three million, nine hundred ninety thousand, one hundred sixty-seven".