74899879 has 2 divisors, whose sum is σ = 74899880. Its totient is φ = 74899878.

The previous prime is 74899801. The next prime is 74899889. The reversal of 74899879 is 97899847.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74899879 - 2²¹ = 72802727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74899889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37449939 + 37449940.

It is an arithmetic number, because the mean of its divisors is an integer number (37449940).

Almost surely, 2^74899879 is an apocalyptic number.

74899879 is a deficient number, since it is larger than the sum of its proper divisors (1).

74899879 is an equidigital number, since it uses as much as digits as its factorization.

74899879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9144576, while the sum is 61.

The square root of 74899879 is about 8654.4716187645. The cubic root of 74899879 is about 421.5285928143.

The spelling of 74899879 in words is "seventy-four million, eight hundred ninety-nine thousand, eight hundred seventy-nine".