40992839 has 4 divisors (see below), whose sum is σ = 41044320. Its totient is φ = 40941360.

The previous prime is 40992821. The next prime is 40992859. The reversal of 40992839 is 93829904.

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 40992839 - 2⁸ = 40992583 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 40992839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40992859) 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, 24527 + ... + 26144.

It is an arithmetic number, because the mean of its divisors is an integer number (10261080).

Almost surely, 2^40992839 is an apocalyptic number.

40992839 is a deficient number, since it is larger than the sum of its proper divisors (51481).

40992839 is an equidigital number, since it uses as much as digits as its factorization.

40992839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51480.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 40992839 is about 6402.5650328599. The cubic root of 40992839 is about 344.8016475168.

The spelling of 40992839 in words is "forty million, nine hundred ninety-two thousand, eight hundred thirty-nine".