74140879 has 2 divisors, whose sum is σ = 74140880. Its totient is φ = 74140878.

The previous prime is 74140877. The next prime is 74140889. The reversal of 74140879 is 97804147.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74140879 - 2¹ = 74140877 is a prime.

Together with 74140877, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74140873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37070439 + 37070440.

It is an arithmetic number, because the mean of its divisors is an integer number (37070440).

Almost surely, 2^74140879 is an apocalyptic number.

74140879 is a deficient number, since it is larger than the sum of its proper divisors (1).

74140879 is an equidigital number, since it uses as much as digits as its factorization.

74140879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 74140879 is about 8610.5097990769. The cubic root of 74140879 is about 420.0998987613.

The spelling of 74140879 in words is "seventy-four million, one hundred forty thousand, eight hundred seventy-nine".