40464217 has 2 divisors, whose sum is σ = 40464218. Its totient is φ = 40464216.

The previous prime is 40464209. The next prime is 40464223. The reversal of 40464217 is 71246404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34234201 + 6230016 = 5851^2 + 2496^2 .

It is a cyclic number.

It is not a de Polignac number, because 40464217 - 2³ = 40464209 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40464287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20232108 + 20232109.

It is an arithmetic number, because the mean of its divisors is an integer number (20232109).

Almost surely, 2^40464217 is an apocalyptic number.

It is an amenable number.

40464217 is a deficient number, since it is larger than the sum of its proper divisors (1).

40464217 is an equidigital number, since it uses as much as digits as its factorization.

40464217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 40464217 is about 6361.1490314251. The cubic root of 40464217 is about 343.3131039285.

The spelling of 40464217 in words is "forty million, four hundred sixty-four thousand, two hundred seventeen".