40508823 has 4 divisors (see below), whose sum is σ = 54011768. Its totient is φ = 27005880.

The previous prime is 40508771. The next prime is 40508833. The reversal of 40508823 is 32880504.

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

It is not a de Polignac number, because 40508823 - 2⁶ = 40508759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40508833) 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, 6751468 + ... + 6751473.

It is an arithmetic number, because the mean of its divisors is an integer number (13502942).

Almost surely, 2^40508823 is an apocalyptic number.

40508823 is a deficient number, since it is larger than the sum of its proper divisors (13502945).

40508823 is a wasteful number, since it uses less digits than its factorization.

40508823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13502944.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 40508823 is about 6364.6541932771. The cubic root of 40508823 is about 343.4392087671.

The spelling of 40508823 in words is "forty million, five hundred eight thousand, eight hundred twenty-three".