4090657 has 4 divisors (see below), whose sum is σ = 4110256. Its totient is φ = 4071060.

The previous prime is 4090651. The next prime is 4090663. The reversal of 4090657 is 7560904.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (4090651) and next prime (4090663).

It is a cyclic number.

It is not a de Polignac number, because 4090657 - 2³ = 4090649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4090651) 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, 9483 + ... + 9904.

It is an arithmetic number, because the mean of its divisors is an integer number (1027564).

Almost surely, 2^4090657 is an apocalyptic number.

It is an amenable number.

4090657 is a deficient number, since it is larger than the sum of its proper divisors (19599).

4090657 is a wasteful number, since it uses less digits than its factorization.

4090657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19598.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 4090657 is about 2022.5372678890. The cubic root of 4090657 is about 159.9303994154.

The spelling of 4090657 in words is "four million, ninety thousand, six hundred fifty-seven".