40707879 has 4 divisors (see below), whose sum is σ = 54277176. Its totient is φ = 27138584.

The previous prime is 40707853. The next prime is 40707913. The reversal of 40707879 is 97870704.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40707879 - 2⁵ = 40707847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40707879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40707839) 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, 6784644 + ... + 6784649.

It is an arithmetic number, because the mean of its divisors is an integer number (13569294).

Almost surely, 2^40707879 is an apocalyptic number.

40707879 is a deficient number, since it is larger than the sum of its proper divisors (13569297).

40707879 is a wasteful number, since it uses less digits than its factorization.

40707879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13569296.

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 40707879 is about 6380.2726430773. The cubic root of 40707879 is about 344.0008309652. Note that the first 3 decimals are identical.

The spelling of 40707879 in words is "forty million, seven hundred seven thousand, eight hundred seventy-nine".