74070889 has 2 divisors, whose sum is σ = 74070890. Its totient is φ = 74070888.

The previous prime is 74070881. The next prime is 74070907. The reversal of 74070889 is 98807047.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73960000 + 110889 = 8600^2 + 333^2 .

It is a cyclic number.

It is not a de Polignac number, because 74070889 - 2³ = 74070881 is a prime.

It is not a weakly prime, because it can be changed into another prime (74070881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37035444 + 37035445.

It is an arithmetic number, because the mean of its divisors is an integer number (37035445).

Almost surely, 2^74070889 is an apocalyptic number.

It is an amenable number.

74070889 is a deficient number, since it is larger than the sum of its proper divisors (1).

74070889 is an equidigital number, since it uses as much as digits as its factorization.

74070889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 74070889 is about 8606.4446201669. Note that the first 3 decimals coincide. The cubic root of 74070889 is about 419.9676637992.

The spelling of 74070889 in words is "seventy-four million, seventy thousand, eight hundred eighty-nine".