40879843 has 4 divisors (see below), whose sum is σ = 40895368. Its totient is φ = 40864320.

The previous prime is 40879837. The next prime is 40879859. The reversal of 40879843 is 34897804.

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 40879843 - 2²⁵ = 7325411 is a prime.

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 40879843.

It is not an unprimeable number, because it can be changed into a prime (40879823) 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, 2721 + ... + 9442.

It is an arithmetic number, because the mean of its divisors is an integer number (10223842).

Almost surely, 2^40879843 is an apocalyptic number.

40879843 is a deficient number, since it is larger than the sum of its proper divisors (15525).

40879843 is a wasteful number, since it uses less digits than its factorization.

40879843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15524.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 40879843 is about 6393.7346676258. The cubic root of 40879843 is about 344.4845428594.

The spelling of 40879843 in words is "forty million, eight hundred seventy-nine thousand, eight hundred forty-three".