3921902 has 8 divisors (see below), whose sum is σ = 6085800. Its totient is φ = 1893304.

The previous prime is 3921893. The next prime is 3921913. The reversal of 3921902 is 2091293.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33752 + ... + 33867.

It is an arithmetic number, because the mean of its divisors is an integer number (760725).

Almost surely, 2^3921902 is an apocalyptic number.

3921902 is a deficient number, since it is larger than the sum of its proper divisors (2163898).

3921902 is a wasteful number, since it uses less digits than its factorization.

3921902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67650.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 3921902 is about 1980.3792566072. The cubic root of 3921902 is about 157.7002006086.

Subtracting from 3921902 its reverse (2091293), we obtain a square (1830609 = 1353²).

The spelling of 3921902 in words is "three million, nine hundred twenty-one thousand, nine hundred two".