40695287 has 2 divisors, whose sum is σ = 40695288. Its totient is φ = 40695286.

The previous prime is 40695271. The next prime is 40695289. The reversal of 40695287 is 78259604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40695287 - 2⁴ = 40695271 is a prime.

It is a super-2 number, since 2×40695287² = 3312212768024738, which contains 22 as substring.

Together with 40695289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40695289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20347643 + 20347644.

It is an arithmetic number, because the mean of its divisors is an integer number (20347644).

Almost surely, 2^40695287 is an apocalyptic number.

40695287 is a deficient number, since it is larger than the sum of its proper divisors (1).

40695287 is an equidigital number, since it uses as much as digits as its factorization.

40695287 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 40695287 is about 6379.2857750692. The cubic root of 40695287 is about 343.9653578555.

The spelling of 40695287 in words is "forty million, six hundred ninety-five thousand, two hundred eighty-seven".