3992557 has 4 divisors (see below), whose sum is σ = 3997756. Its totient is φ = 3987360.

The previous prime is 3992533. The next prime is 3992563. The reversal of 3992557 is 7552993.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2090916 + 1901641 = 1446^2 + 1379^2 .

It is a cyclic number.

It is not a de Polignac number, because 3992557 - 2¹¹ = 3990509 is a prime.

It is a super-2 number, since 2×3992557² = 31881022796498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3992567) 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, 1194 + ... + 3067.

It is an arithmetic number, because the mean of its divisors is an integer number (999439).

Almost surely, 2^3992557 is an apocalyptic number.

It is an amenable number.

3992557 is a deficient number, since it is larger than the sum of its proper divisors (5199).

3992557 is an equidigital number, since it uses as much as digits as its factorization.

3992557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5198.

The product of its digits is 85050, while the sum is 40.

The square root of 3992557 is about 1998.1383835961. The cubic root of 3992557 is about 158.6415855144.

The spelling of 3992557 in words is "three million, nine hundred ninety-two thousand, five hundred fifty-seven".