40920259 has 2 divisors, whose sum is σ = 40920260. Its totient is φ = 40920258.

The previous prime is 40920227. The next prime is 40920283. The reversal of 40920259 is 95202904.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40920259 - 2⁵ = 40920227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40920259.

It is not a weakly prime, because it can be changed into another prime (40920359) 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, 20460129 + 20460130.

It is an arithmetic number, because the mean of its divisors is an integer number (20460130).

Almost surely, 2^40920259 is an apocalyptic number.

40920259 is a deficient number, since it is larger than the sum of its proper divisors (1).

40920259 is an equidigital number, since it uses as much as digits as its factorization.

40920259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 40920259 is about 6396.8944809181. The cubic root of 40920259 is about 344.5980307510.

The spelling of 40920259 in words is "forty million, nine hundred twenty thousand, two hundred fifty-nine".