40807923 has 12 divisors (see below), whose sum is σ = 58918680. Its totient is φ = 25112256.

The previous prime is 40807867. The next prime is 40807927. The reversal of 40807923 is 32970804.

It is not a de Polignac number, because 40807923 - 2¹² = 40803827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40807927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39738 + ... + 40751.

It is an arithmetic number, because the mean of its divisors is an integer number (4909890).

Almost surely, 2^40807923 is an apocalyptic number.

40807923 is a deficient number, since it is larger than the sum of its proper divisors (18110757).

40807923 is a wasteful number, since it uses less digits than its factorization.

40807923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80518 (or 80505 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 40807923 is about 6388.1079358445. The cubic root of 40807923 is about 344.2824067958.

The spelling of 40807923 in words is "forty million, eight hundred seven thousand, nine hundred twenty-three".