4090361 has 4 divisors (see below), whose sum is σ = 4462224. Its totient is φ = 3718500.

The previous prime is 4090349. The next prime is 4090379. The reversal of 4090361 is 1630904.

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 a cyclic number.

It is not a de Polignac number, because 4090361 - 2¹⁸ = 3828217 is a prime.

It is a super-2 number, since 2×4090361² = 33462106220642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4090061) 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, 185915 + ... + 185936.

It is an arithmetic number, because the mean of its divisors is an integer number (1115556).

Almost surely, 2^4090361 is an apocalyptic number.

It is an amenable number.

4090361 is a deficient number, since it is larger than the sum of its proper divisors (371863).

4090361 is a wasteful number, since it uses less digits than its factorization.

4090361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371862.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 4090361 is about 2022.4640911522. The cubic root of 4090361 is about 159.9265418003.

The spelling of 4090361 in words is "four million, ninety thousand, three hundred sixty-one".