40373923 has 2 divisors, whose sum is σ = 40373924. Its totient is φ = 40373922.

The previous prime is 40373909. The next prime is 40373951. The reversal of 40373923 is 32937304.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40373923 is a prime.

It is not a weakly prime, because it can be changed into another prime (40373903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20186961 + 20186962.

It is an arithmetic number, because the mean of its divisors is an integer number (20186962).

Almost surely, 2^40373923 is an apocalyptic number.

40373923 is a deficient number, since it is larger than the sum of its proper divisors (1).

40373923 is an equidigital number, since it uses as much as digits as its factorization.

40373923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 31.

The square root of 40373923 is about 6354.0477650078. The cubic root of 40373923 is about 343.0575513933.

The spelling of 40373923 in words is "forty million, three hundred seventy-three thousand, nine hundred twenty-three".