40626649 has 4 divisors (see below), whose sum is σ = 46430464. Its totient is φ = 34822836.

The previous prime is 40626587. The next prime is 40626653. The reversal of 40626649 is 94662604.

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 a de Polignac number, because none of the positive numbers 2^k-40626649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40626679) 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, 2901897 + ... + 2901910.

It is an arithmetic number, because the mean of its divisors is an integer number (11607616).

Almost surely, 2^40626649 is an apocalyptic number.

It is an amenable number.

40626649 is a deficient number, since it is larger than the sum of its proper divisors (5803815).

40626649 is an equidigital number, since it uses as much as digits as its factorization.

40626649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5803814.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 40626649 is about 6373.9037488811. The cubic root of 40626649 is about 343.7718679642.

The spelling of 40626649 in words is "forty million, six hundred twenty-six thousand, six hundred forty-nine".