40080649 has 4 divisors (see below), whose sum is σ = 45806464. Its totient is φ = 34354836.

The previous prime is 40080643. The next prime is 40080653. The reversal of 40080649 is 94608004.

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 40080649 - 2³ = 40080641 is a prime.

It is a super-2 number, since 2×40080649² = 3212916848522402, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40080649.

It is not an unprimeable number, because it can be changed into a prime (40080641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2862897 + ... + 2862910.

It is an arithmetic number, because the mean of its divisors is an integer number (11451616).

Almost surely, 2^40080649 is an apocalyptic number.

It is an amenable number.

40080649 is a deficient number, since it is larger than the sum of its proper divisors (5725815).

40080649 is an equidigital number, since it uses as much as digits as its factorization.

40080649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5725814.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 40080649 is about 6330.9279730542. The cubic root of 40080649 is about 342.2248814510.

The spelling of 40080649 in words is "forty million, eighty thousand, six hundred forty-nine".