74552389 has 2 divisors, whose sum is σ = 74552390. Its totient is φ = 74552388.

The previous prime is 74552383. The next prime is 74552449. The reversal of 74552389 is 98325547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63728289 + 10824100 = 7983^2 + 3290^2 .

It is a cyclic number.

It is not a de Polignac number, because 74552389 - 2³ = 74552381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74552381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37276194 + 37276195.

It is an arithmetic number, because the mean of its divisors is an integer number (37276195).

Almost surely, 2^74552389 is an apocalyptic number.

It is an amenable number.

74552389 is a deficient number, since it is larger than the sum of its proper divisors (1).

74552389 is an equidigital number, since it uses as much as digits as its factorization.

74552389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 43.

The square root of 74552389 is about 8634.3725307633. The cubic root of 74552389 is about 420.8757031178.

The spelling of 74552389 in words is "seventy-four million, five hundred fifty-two thousand, three hundred eighty-nine".