73944089 has 2 divisors, whose sum is σ = 73944090. Its totient is φ = 73944088.

The previous prime is 73944071. The next prime is 73944097. The reversal of 73944089 is 98044937.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69139225 + 4804864 = 8315^2 + 2192^2 .

It is an emirp because it is prime and its reverse (98044937) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73944089 - 2¹² = 73939993 is a prime.

It is not a weakly prime, because it can be changed into another prime (73949089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36972044 + 36972045.

It is an arithmetic number, because the mean of its divisors is an integer number (36972045).

Almost surely, 2^73944089 is an apocalyptic number.

It is an amenable number.

73944089 is a deficient number, since it is larger than the sum of its proper divisors (1).

73944089 is an equidigital number, since it uses as much as digits as its factorization.

73944089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 73944089 is about 8599.0748921032. The cubic root of 73944089 is about 419.7278830691.

The spelling of 73944089 in words is "seventy-three million, nine hundred forty-four thousand, eighty-nine".