40612689 has 24 divisors (see below), whose sum is σ = 63434280. Its totient is φ = 24890112.

The previous prime is 40612679. The next prime is 40612721. The reversal of 40612689 is 98621604.

It can be written as a sum of positive squares in 4 ways, for example, as 8803089 + 31809600 = 2967^2 + 5640^2 .

It is not a de Polignac number, because 40612689 - 2⁵ = 40612657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40612669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36067 + ... + 37175.

It is an arithmetic number, because the mean of its divisors is an integer number (2643095).

Almost surely, 2^40612689 is an apocalyptic number.

It is an amenable number.

40612689 is a deficient number, since it is larger than the sum of its proper divisors (22821591).

40612689 is a wasteful number, since it uses less digits than its factorization.

40612689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441 (or 1438 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 40612689 is about 6372.8085645185. The cubic root of 40612689 is about 343.7324881878.

The spelling of 40612689 in words is "forty million, six hundred twelve thousand, six hundred eighty-nine".