4090291 has 4 divisors (see below), whose sum is σ = 4100992. Its totient is φ = 4079592.

The previous prime is 4090279. The next prime is 4090309. The reversal of 4090291 is 1920904.

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

It is a cyclic number.

It is not a de Polignac number, because 4090291 - 2⁵ = 4090259 is a prime.

It is a Duffinian number.

4090291 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4090241) 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, 4755 + ... + 5548.

It is an arithmetic number, because the mean of its divisors is an integer number (1025248).

Almost surely, 2^4090291 is an apocalyptic number.

4090291 is a deficient number, since it is larger than the sum of its proper divisors (10701).

4090291 is a wasteful number, since it uses less digits than its factorization.

4090291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10700.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 4090291 is about 2022.4467854557. The cubic root of 4090291 is about 159.9256294993.

The spelling of 4090291 in words is "four million, ninety thousand, two hundred ninety-one".