40505299 has 2 divisors, whose sum is σ = 40505300. Its totient is φ = 40505298.

The previous prime is 40505263. The next prime is 40505317. The reversal of 40505299 is 99250504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40505299 - 2⁹ = 40504787 is a prime.

It is not a weakly prime, because it can be changed into another prime (40505209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20252649 + 20252650.

It is an arithmetic number, because the mean of its divisors is an integer number (20252650).

Almost surely, 2^40505299 is an apocalyptic number.

40505299 is a deficient number, since it is larger than the sum of its proper divisors (1).

40505299 is an equidigital number, since it uses as much as digits as its factorization.

40505299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 40505299 is about 6364.3773458210. The cubic root of 40505299 is about 343.4292494975.

It can be divided in two parts, 40505 and 299, that added together give a palindrome (40804).

The spelling of 40505299 in words is "forty million, five hundred five thousand, two hundred ninety-nine".