4090465 has 4 divisors (see below), whose sum is σ = 4908564. Its totient is φ = 3272368.

The previous prime is 4090451. The next prime is 4090507. The reversal of 4090465 is 5640904.

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 3017169 + 1073296 = 1737^2 + 1036^2 .

It is a cyclic number.

It is not a de Polignac number, because 4090465 - 2⁵ = 4090433 is a prime.

It is a Duffinian number.

4090465 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409042 + ... + 409051.

It is an arithmetic number, because the mean of its divisors is an integer number (1227141).

Almost surely, 2^4090465 is an apocalyptic number.

It is an amenable number.

4090465 is a deficient number, since it is larger than the sum of its proper divisors (818099).

4090465 is an equidigital number, since it uses as much as digits as its factorization.

4090465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818098.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 4090465 is about 2022.4898021993. The cubic root of 4090465 is about 159.9278971998.

The spelling of 4090465 in words is "four million, ninety thousand, four hundred sixty-five".