74418889 has 2 divisors, whose sum is σ = 74418890. Its totient is φ = 74418888.

The previous prime is 74418871. The next prime is 74418899. The reversal of 74418889 is 98881447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44355600 + 30063289 = 6660^2 + 5483^2 .

It is a cyclic number.

It is not a de Polignac number, because 74418889 - 2⁵ = 74418857 is a prime.

It is not a weakly prime, because it can be changed into another prime (74418829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37209444 + 37209445.

It is an arithmetic number, because the mean of its divisors is an integer number (37209445).

Almost surely, 2^74418889 is an apocalyptic number.

It is an amenable number.

74418889 is a deficient number, since it is larger than the sum of its proper divisors (1).

74418889 is an equidigital number, since it uses as much as digits as its factorization.

74418889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 49.

The square root of 74418889 is about 8626.6383371508. The cubic root of 74418889 is about 420.6243341220.

The spelling of 74418889 in words is "seventy-four million, four hundred eighteen thousand, eight hundred eighty-nine".