40964669 has 2 divisors, whose sum is σ = 40964670. Its totient is φ = 40964668.

The previous prime is 40964663. The next prime is 40964711. The reversal of 40964669 is 96646904.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40896025 + 68644 = 6395^2 + 262^2 .

It is a cyclic number.

It is not a de Polignac number, because 40964669 - 2²⁴ = 24187453 is a prime.

It is a super-2 number, since 2×40964669² = 3356208212559122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40964663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20482334 + 20482335.

It is an arithmetic number, because the mean of its divisors is an integer number (20482335).

Almost surely, 2^40964669 is an apocalyptic number.

It is an amenable number.

40964669 is a deficient number, since it is larger than the sum of its proper divisors (1).

40964669 is an equidigital number, since it uses as much as digits as its factorization.

40964669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 40964669 is about 6400.3647552308. The cubic root of 40964669 is about 344.7226476361.

The spelling of 40964669 in words is "forty million, nine hundred sixty-four thousand, six hundred sixty-nine".