3891002 has 16 divisors (see below), whose sum is σ = 6132672. Its totient is φ = 1848000.

The previous prime is 3890981. The next prime is 3891037. The reversal of 3891002 is 2001983.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11378 + ... + 11714.

It is an arithmetic number, because the mean of its divisors is an integer number (383292).

Almost surely, 2^3891002 is an apocalyptic number.

3891002 is a deficient number, since it is larger than the sum of its proper divisors (2241670).

3891002 is a wasteful number, since it uses less digits than its factorization.

3891002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 3891002 is about 1972.5622930595. The cubic root of 3891002 is about 157.2849437434.

Adding to 3891002 its reverse (2001983), we get a palindrome (5892985).

The spelling of 3891002 in words is "three million, eight hundred ninety-one thousand, two".