40275689 has 2 divisors, whose sum is σ = 40275690. Its totient is φ = 40275688.

The previous prime is 40275629. The next prime is 40275709. The reversal of 40275689 is 98657204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40195600 + 80089 = 6340^2 + 283^2 .

It is a cyclic number.

It is not a de Polignac number, because 40275689 - 2²⁰ = 39227113 is a prime.

It is a super-2 number, since 2×40275689² = 3244262248849442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40275629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20137844 + 20137845.

It is an arithmetic number, because the mean of its divisors is an integer number (20137845).

Almost surely, 2^40275689 is an apocalyptic number.

It is an amenable number.

40275689 is a deficient number, since it is larger than the sum of its proper divisors (1).

40275689 is an equidigital number, since it uses as much as digits as its factorization.

40275689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 40275689 is about 6346.3130241109. The cubic root of 40275689 is about 342.7790937337.

The spelling of 40275689 in words is "forty million, two hundred seventy-five thousand, six hundred eighty-nine".