40299173 has 2 divisors, whose sum is σ = 40299174. Its totient is φ = 40299172.

The previous prime is 40299167. The next prime is 40299199. The reversal of 40299173 is 37199204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35796289 + 4502884 = 5983^2 + 2122^2 .

It is a cyclic number.

It is not a de Polignac number, because 40299173 - 2⁴ = 40299157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40209173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20149586 + 20149587.

It is an arithmetic number, because the mean of its divisors is an integer number (20149587).

Almost surely, 2^40299173 is an apocalyptic number.

It is an amenable number.

40299173 is a deficient number, since it is larger than the sum of its proper divisors (1).

40299173 is an equidigital number, since it uses as much as digits as its factorization.

40299173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 40299173 is about 6348.1629626215. The cubic root of 40299173 is about 342.8457034791.

The spelling of 40299173 in words is "forty million, two hundred ninety-nine thousand, one hundred seventy-three".