40964947 has 2 divisors, whose sum is σ = 40964948. Its totient is φ = 40964946.

The previous prime is 40964927. The next prime is 40964953. The reversal of 40964947 is 74946904.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40964947 - 2¹⁵ = 40932179 is a prime.

It is not a weakly prime, because it can be changed into another prime (40964927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20482473 + 20482474.

It is an arithmetic number, because the mean of its divisors is an integer number (20482474).

Almost surely, 2^40964947 is an apocalyptic number.

40964947 is a deficient number, since it is larger than the sum of its proper divisors (1).

40964947 is an equidigital number, since it uses as much as digits as its factorization.

40964947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 40964947 is about 6400.3864727062. The cubic root of 40964947 is about 344.7234274355.

It can be divided in two parts, 409 and 64947, that added together give a palindrome (65356).

The spelling of 40964947 in words is "forty million, nine hundred sixty-four thousand, nine hundred forty-seven".