74112989 has 2 divisors, whose sum is σ = 74112990. Its totient is φ = 74112988.

The previous prime is 74112967. The next prime is 74112991. The reversal of 74112989 is 98921147.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53772889 + 20340100 = 7333^2 + 4510^2 .

It is a cyclic number.

It is not a de Polignac number, because 74112989 - 2⁸ = 74112733 is a prime.

Together with 74112991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74112959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37056494 + 37056495.

It is an arithmetic number, because the mean of its divisors is an integer number (37056495).

Almost surely, 2^74112989 is an apocalyptic number.

It is an amenable number.

74112989 is a deficient number, since it is larger than the sum of its proper divisors (1).

74112989 is an equidigital number, since it uses as much as digits as its factorization.

74112989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 41.

The square root of 74112989 is about 8608.8901142946. The cubic root of 74112989 is about 420.0472150246.

The spelling of 74112989 in words is "seventy-four million, one hundred twelve thousand, nine hundred eighty-nine".