40372117 has 2 divisors, whose sum is σ = 40372118. Its totient is φ = 40372116.

The previous prime is 40372109. The next prime is 40372151. The reversal of 40372117 is 71127304.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39866596 + 505521 = 6314^2 + 711^2 .

It is a cyclic number.

It is not a de Polignac number, because 40372117 - 2³ = 40372109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40372091 and 40372100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40372817) 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, 20186058 + 20186059.

It is an arithmetic number, because the mean of its divisors is an integer number (20186059).

Almost surely, 2^40372117 is an apocalyptic number.

It is an amenable number.

40372117 is a deficient number, since it is larger than the sum of its proper divisors (1).

40372117 is an equidigital number, since it uses as much as digits as its factorization.

40372117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 40372117 is about 6353.9056492838. The cubic root of 40372117 is about 343.0524361181.

The spelling of 40372117 in words is "forty million, three hundred seventy-two thousand, one hundred seventeen".