74803979 has 2 divisors, whose sum is σ = 74803980. Its totient is φ = 74803978.

The previous prime is 74803919. The next prime is 74803997. The reversal of 74803979 is 97930847.

Together with next prime (74803997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74803979 - 2¹² = 74799883 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (74803909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37401989 + 37401990.

It is an arithmetic number, because the mean of its divisors is an integer number (37401990).

Almost surely, 2^74803979 is an apocalyptic number.

74803979 is a deficient number, since it is larger than the sum of its proper divisors (1).

74803979 is an equidigital number, since it uses as much as digits as its factorization.

74803979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 74803979 is about 8648.9293557064. The cubic root of 74803979 is about 421.3486109605.

The spelling of 74803979 in words is "seventy-four million, eight hundred three thousand, nine hundred seventy-nine".