240064091 has 2 divisors, whose sum is σ = 240064092. Its totient is φ = 240064090.

The previous prime is 240064079. The next prime is 240064127. The reversal of 240064091 is 190460042.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240064091 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240064091.

It is not a weakly prime, because it can be changed into another prime (240064051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120032045 + 120032046.

It is an arithmetic number, because the mean of its divisors is an integer number (120032046).

Almost surely, 2^240064091 is an apocalyptic number.

240064091 is a deficient number, since it is larger than the sum of its proper divisors (1).

240064091 is an equidigital number, since it uses as much as digits as its factorization.

240064091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 240064091 is about 15494.0017748805. The cubic root of 240064091 is about 621.5018145003.

The spelling of 240064091 in words is "two hundred forty million, sixty-four thousand, ninety-one".