74494109 has 2 divisors, whose sum is σ = 74494110. Its totient is φ = 74494108.

The previous prime is 74494087. The next prime is 74494129. The reversal of 74494109 is 90149447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73582084 + 912025 = 8578^2 + 955^2 .

It is a cyclic number.

It is not a de Polignac number, because 74494109 - 2¹⁶ = 74428573 is a prime.

It is a Chen prime.

It is equal to p_4366379 and since 74494109 and 4366379 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74494129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37247054 + 37247055.

It is an arithmetic number, because the mean of its divisors is an integer number (37247055).

Almost surely, 2^74494109 is an apocalyptic number.

It is an amenable number.

74494109 is a deficient number, since it is larger than the sum of its proper divisors (1).

74494109 is an equidigital number, since it uses as much as digits as its factorization.

74494109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 74494109 is about 8630.9969876023. The cubic root of 74494109 is about 420.7660038371.

The spelling of 74494109 in words is "seventy-four million, four hundred ninety-four thousand, one hundred nine".