73023989 has 2 divisors, whose sum is σ = 73023990. Its totient is φ = 73023988.

The previous prime is 73023961. The next prime is 73023991. The reversal of 73023989 is 98932037.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69722500 + 3301489 = 8350^2 + 1817^2 .

It is a cyclic number.

It is not a de Polignac number, because 73023989 - 2²⁰ = 71975413 is a prime.

Together with 73023991, 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 (73023949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36511994 + 36511995.

It is an arithmetic number, because the mean of its divisors is an integer number (36511995).

Almost surely, 2^73023989 is an apocalyptic number.

It is an amenable number.

73023989 is a deficient number, since it is larger than the sum of its proper divisors (1).

73023989 is an equidigital number, since it uses as much as digits as its factorization.

73023989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 73023989 is about 8545.4074800445. The cubic root of 73023989 is about 417.9796946097.

The spelling of 73023989 in words is "seventy-three million, twenty-three thousand, nine hundred eighty-nine".