40632569 has 2 divisors, whose sum is σ = 40632570. Its totient is φ = 40632568.

The previous prime is 40632547. The next prime is 40632577. The reversal of 40632569 is 96523604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34810000 + 5822569 = 5900^2 + 2413^2 .

It is a cyclic number.

It is not a de Polignac number, because 40632569 - 2⁸ = 40632313 is a prime.

It is a super-2 number, since 2×40632569² = 3302011327079522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40632539) 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, 20316284 + 20316285.

It is an arithmetic number, because the mean of its divisors is an integer number (20316285).

Almost surely, 2^40632569 is an apocalyptic number.

It is an amenable number.

40632569 is a deficient number, since it is larger than the sum of its proper divisors (1).

40632569 is an equidigital number, since it uses as much as digits as its factorization.

40632569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 40632569 is about 6374.3681255478. The cubic root of 40632569 is about 343.7885649735.

The spelling of 40632569 in words is "forty million, six hundred thirty-two thousand, five hundred sixty-nine".