40567649 has 2 divisors, whose sum is σ = 40567650. Its totient is φ = 40567648.

The previous prime is 40567613. The next prime is 40567663. The reversal of 40567649 is 94676504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35617024 + 4950625 = 5968^2 + 2225^2 .

It is a cyclic number.

It is not a de Polignac number, because 40567649 - 2¹² = 40563553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40167649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20283824 + 20283825.

It is an arithmetic number, because the mean of its divisors is an integer number (20283825).

Almost surely, 2^40567649 is an apocalyptic number.

It is an amenable number.

40567649 is a deficient number, since it is larger than the sum of its proper divisors (1).

40567649 is an equidigital number, since it uses as much as digits as its factorization.

40567649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 40567649 is about 6369.2738204602. The cubic root of 40567649 is about 343.6053732530.

The spelling of 40567649 in words is "forty million, five hundred sixty-seven thousand, six hundred forty-nine".