40729259 has 2 divisors, whose sum is σ = 40729260. Its totient is φ = 40729258.

The previous prime is 40729243. The next prime is 40729261. The reversal of 40729259 is 95292704.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40729259 - 2⁴ = 40729243 is a prime.

Together with 40729261, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40729289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20364629 + 20364630.

It is an arithmetic number, because the mean of its divisors is an integer number (20364630).

Almost surely, 2^40729259 is an apocalyptic number.

40729259 is a deficient number, since it is larger than the sum of its proper divisors (1).

40729259 is an equidigital number, since it uses as much as digits as its factorization.

40729259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 40729259 is about 6381.9479001321. The cubic root of 40729259 is about 344.0610441290.

It can be divided in two parts, 4072 and 9259, that added together give a palindrome (13331).

The spelling of 40729259 in words is "forty million, seven hundred twenty-nine thousand, two hundred fifty-nine".