40807823 has 8 divisors (see below), whose sum is σ = 46677120. Its totient is φ = 34948440.

The previous prime is 40807813. The next prime is 40807847. The reversal of 40807823 is 32870804.

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 40807823 - 2⁸ = 40807567 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40807823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40807813) 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, 12008 + ... + 15026.

It is an arithmetic number, because the mean of its divisors is an integer number (5834640).

Almost surely, 2^40807823 is an apocalyptic number.

40807823 is a deficient number, since it is larger than the sum of its proper divisors (5869297).

40807823 is a wasteful number, since it uses less digits than its factorization.

40807823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4957.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 40807823 is about 6388.1001087960. The cubic root of 40807823 is about 344.2821255737.

The spelling of 40807823 in words is "forty million, eight hundred seven thousand, eight hundred twenty-three".