40423099 has 2 divisors, whose sum is σ = 40423100. Its totient is φ = 40423098.

The previous prime is 40423091. The next prime is 40423109. The reversal of 40423099 is 99032404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40423099 - 2³ = 40423091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40423099.

It is not a weakly prime, because it can be changed into another prime (40423091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20211549 + 20211550.

It is an arithmetic number, because the mean of its divisors is an integer number (20211550).

Almost surely, 2^40423099 is an apocalyptic number.

40423099 is a deficient number, since it is larger than the sum of its proper divisors (1).

40423099 is an equidigital number, since it uses as much as digits as its factorization.

40423099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 40423099 is about 6357.9162466959. The cubic root of 40423099 is about 343.1967778390.

The spelling of 40423099 in words is "forty million, four hundred twenty-three thousand, ninety-nine".