3992457 has 16 divisors (see below), whose sum is σ = 6233472. Its totient is φ = 2225280.

The previous prime is 3992453. The next prime is 3992477. The reversal of 3992457 is 7542993.

It is not a de Polignac number, because 3992457 - 2² = 3992453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3992453) 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 15 ways as a sum of consecutive naturals, for example, 1458 + ... + 3179.

It is an arithmetic number, because the mean of its divisors is an integer number (389592).

Almost surely, 2^3992457 is an apocalyptic number.

It is an amenable number.

3992457 is a deficient number, since it is larger than the sum of its proper divisors (2241015).

3992457 is a wasteful number, since it uses less digits than its factorization.

3992457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4688.

The product of its digits is 68040, while the sum is 39.

The square root of 3992457 is about 1998.1133601475. The cubic root of 3992457 is about 158.6402610257.

The spelling of 3992457 in words is "three million, nine hundred ninety-two thousand, four hundred fifty-seven".