40738879 has 2 divisors, whose sum is σ = 40738880. Its totient is φ = 40738878.

The previous prime is 40738861. The next prime is 40738883. The reversal of 40738879 is 97883704.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40738879 - 2⁷ = 40738751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40738829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20369439 + 20369440.

It is an arithmetic number, because the mean of its divisors is an integer number (20369440).

Almost surely, 2^40738879 is an apocalyptic number.

40738879 is a deficient number, since it is larger than the sum of its proper divisors (1).

40738879 is an equidigital number, since it uses as much as digits as its factorization.

40738879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 40738879 is about 6382.7015440172. The cubic root of 40738879 is about 344.0881303627.

The spelling of 40738879 in words is "forty million, seven hundred thirty-eight thousand, eight hundred seventy-nine".