74418989 has 2 divisors, whose sum is σ = 74418990. Its totient is φ = 74418988.

The previous prime is 74418973. The next prime is 74419031. The reversal of 74418989 is 98981447.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61936900 + 12482089 = 7870^2 + 3533^2 .

It is a cyclic number.

It is not a de Polignac number, because 74418989 - 2⁴ = 74418973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74418919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37209494 + 37209495.

It is an arithmetic number, because the mean of its divisors is an integer number (37209495).

Almost surely, 2^74418989 is an apocalyptic number.

It is an amenable number.

74418989 is a deficient number, since it is larger than the sum of its proper divisors (1).

74418989 is an equidigital number, since it uses as much as digits as its factorization.

74418989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 50.

The square root of 74418989 is about 8626.6441331493. The cubic root of 74418989 is about 420.6245225258.

The spelling of 74418989 in words is "seventy-four million, four hundred eighteen thousand, nine hundred eighty-nine".