73489121 has 2 divisors, whose sum is σ = 73489122. Its totient is φ = 73489120.

The previous prime is 73489109. The next prime is 73489123. The reversal of 73489121 is 12198437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66650896 + 6838225 = 8164^2 + 2615^2 .

It is a cyclic number.

It is not a de Polignac number, because 73489121 - 2⁶ = 73489057 is a prime.

Together with 73489123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73489123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36744560 + 36744561.

It is an arithmetic number, because the mean of its divisors is an integer number (36744561).

Almost surely, 2^73489121 is an apocalyptic number.

It is an amenable number.

73489121 is a deficient number, since it is larger than the sum of its proper divisors (1).

73489121 is an equidigital number, since it uses as much as digits as its factorization.

73489121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 73489121 is about 8572.5796000970. The cubic root of 73489121 is about 418.8652684530.

The spelling of 73489121 in words is "seventy-three million, four hundred eighty-nine thousand, one hundred twenty-one".