3922491 has 4 divisors (see below), whose sum is σ = 5229992. Its totient is φ = 2614992.

The previous prime is 3922487. The next prime is 3922507. The reversal of 3922491 is 1942293.

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

It is not a de Polignac number, because 3922491 - 2² = 3922487 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3922691) 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, 653746 + ... + 653751.

It is an arithmetic number, because the mean of its divisors is an integer number (1307498).

Almost surely, 2^3922491 is an apocalyptic number.

3922491 is a deficient number, since it is larger than the sum of its proper divisors (1307501).

3922491 is a wasteful number, since it uses less digits than its factorization.

3922491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307500.

The product of its digits is 3888, while the sum is 30.

The square root of 3922491 is about 1980.5279599137. The cubic root of 3922491 is about 157.7080948029.

The spelling of 3922491 in words is "three million, nine hundred twenty-two thousand, four hundred ninety-one".