40465291 has 2 divisors, whose sum is σ = 40465292. Its totient is φ = 40465290.

The previous prime is 40465289. The next prime is 40465361. The reversal of 40465291 is 19256404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40465291 - 2¹ = 40465289 is a prime.

Together with 40465289, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40468291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20232645 + 20232646.

It is an arithmetic number, because the mean of its divisors is an integer number (20232646).

Almost surely, 2^40465291 is an apocalyptic number.

40465291 is a deficient number, since it is larger than the sum of its proper divisors (1).

40465291 is an equidigital number, since it uses as much as digits as its factorization.

40465291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 40465291 is about 6361.2334495756. The cubic root of 40465291 is about 343.3161413036.

The spelling of 40465291 in words is "forty million, four hundred sixty-five thousand, two hundred ninety-one".