40099117 has 2 divisors, whose sum is σ = 40099118. Its totient is φ = 40099116.

The previous prime is 40099109. The next prime is 40099123. The reversal of 40099117 is 71199004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20967241 + 19131876 = 4579^2 + 4374^2 .

It is a cyclic number.

It is not a de Polignac number, because 40099117 - 2³ = 40099109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40099187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20049558 + 20049559.

It is an arithmetic number, because the mean of its divisors is an integer number (20049559).

Almost surely, 2^40099117 is an apocalyptic number.

It is an amenable number.

40099117 is a deficient number, since it is larger than the sum of its proper divisors (1).

40099117 is an equidigital number, since it uses as much as digits as its factorization.

40099117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 40099117 is about 6332.3863590277. The cubic root of 40099117 is about 342.2774358115.

The spelling of 40099117 in words is "forty million, ninety-nine thousand, one hundred seventeen".