74174389 has 2 divisors, whose sum is σ = 74174390. Its totient is φ = 74174388.

The previous prime is 74174377. The next prime is 74174393. The reversal of 74174389 is 98347147.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71267364 + 2907025 = 8442^2 + 1705^2 .

It is a cyclic number.

It is not a de Polignac number, because 74174389 - 2⁵ = 74174357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74114389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37087194 + 37087195.

It is an arithmetic number, because the mean of its divisors is an integer number (37087195).

Almost surely, 2^74174389 is an apocalyptic number.

It is an amenable number.

74174389 is a deficient number, since it is larger than the sum of its proper divisors (1).

74174389 is an equidigital number, since it uses as much as digits as its factorization.

74174389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 43.

The square root of 74174389 is about 8612.4554570691. The cubic root of 74174389 is about 420.1631811116.

The spelling of 74174389 in words is "seventy-four million, one hundred seventy-four thousand, three hundred eighty-nine".