74998279 has 2 divisors, whose sum is σ = 74998280. Its totient is φ = 74998278.

The previous prime is 74998277. The next prime is 74998327. The reversal of 74998279 is 97289947.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74998279 - 2¹ = 74998277 is a prime.

Together with 74998277, 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 (74998277) 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, 37499139 + 37499140.

It is an arithmetic number, because the mean of its divisors is an integer number (37499140).

Almost surely, 2^74998279 is an apocalyptic number.

74998279 is a deficient number, since it is larger than the sum of its proper divisors (1).

74998279 is an equidigital number, since it uses as much as digits as its factorization.

74998279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 55.

The square root of 74998279 is about 8660.1546752930. The cubic root of 74998279 is about 421.7131069648.

The spelling of 74998279 in words is "seventy-four million, nine hundred ninety-eight thousand, two hundred seventy-nine".