40507879 has 8 divisors (see below), whose sum is σ = 41171760. Its totient is φ = 39849216.

The previous prime is 40507861. The next prime is 40507891. The reversal of 40507879 is 97870504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40507879 - 2²³ = 32119271 is a prime.

It is a super-2 number, since 2×40507879² = 3281776522157282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40507079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16197 + ... + 18529.

It is an arithmetic number, because the mean of its divisors is an integer number (5146470).

Almost surely, 2^40507879 is an apocalyptic number.

40507879 is a deficient number, since it is larger than the sum of its proper divisors (663881).

40507879 is a wasteful number, since it uses less digits than its factorization.

40507879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2609.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 40507879 is about 6364.5800332779. The cubic root of 40507879 is about 343.4365409603.

The spelling of 40507879 in words is "forty million, five hundred seven thousand, eight hundred seventy-nine".