40632689 has 2 divisors, whose sum is σ = 40632690. Its totient is φ = 40632688.

The previous prime is 40632679. The next prime is 40632701. The reversal of 40632689 is 98623604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27615025 + 13017664 = 5255^2 + 3608^2 .

It is a cyclic number.

It is not a de Polignac number, because 40632689 - 2⁴ = 40632673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40632679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20316344 + 20316345.

It is an arithmetic number, because the mean of its divisors is an integer number (20316345).

Almost surely, 2^40632689 is an apocalyptic number.

It is an amenable number.

40632689 is a deficient number, since it is larger than the sum of its proper divisors (1).

40632689 is an equidigital number, since it uses as much as digits as its factorization.

40632689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 40632689 is about 6374.3775382385. The cubic root of 40632689 is about 343.7889034097.

The spelling of 40632689 in words is "forty million, six hundred thirty-two thousand, six hundred eighty-nine".