40637269 has 2 divisors, whose sum is σ = 40637270. Its totient is φ = 40637268.

The previous prime is 40637243. The next prime is 40637287. The reversal of 40637269 is 96273604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23522500 + 17114769 = 4850^2 + 4137^2 .

It is a cyclic number.

It is not a de Polignac number, because 40637269 - 2⁵ = 40637237 is a prime.

It is a super-2 number, since 2×40637269² = 3302775263556722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40637239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20318634 + 20318635.

It is an arithmetic number, because the mean of its divisors is an integer number (20318635).

Almost surely, 2^40637269 is an apocalyptic number.

It is an amenable number.

40637269 is a deficient number, since it is larger than the sum of its proper divisors (1).

40637269 is an equidigital number, since it uses as much as digits as its factorization.

40637269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 40637269 is about 6374.7367788796. The cubic root of 40637269 is about 343.8018198903.

It can be divided in two parts, 406 and 37269, that added together give a triangular number (37675 = T₂₇₄).

The spelling of 40637269 in words is "forty million, six hundred thirty-seven thousand, two hundred sixty-nine".