40515967 has 2 divisors, whose sum is σ = 40515968. Its totient is φ = 40515966.

The previous prime is 40515941. The next prime is 40515971. The reversal of 40515967 is 76951504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40515967 - 2¹¹ = 40513919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40515067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20257983 + 20257984.

It is an arithmetic number, because the mean of its divisors is an integer number (20257984).

Almost surely, 2^40515967 is an apocalyptic number.

40515967 is a deficient number, since it is larger than the sum of its proper divisors (1).

40515967 is an equidigital number, since it uses as much as digits as its factorization.

40515967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 40515967 is about 6365.2153930562. The cubic root of 40515967 is about 343.4593968422.

The spelling of 40515967 in words is "forty million, five hundred fifteen thousand, nine hundred sixty-seven".