73422913 has 2 divisors, whose sum is σ = 73422914. Its totient is φ = 73422912.

The previous prime is 73422901. The next prime is 73422917. The reversal of 73422913 is 31922437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46621584 + 26801329 = 6828^2 + 5177^2 .

It is an emirp because it is prime and its reverse (31922437) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73422913 - 2²⁵ = 39868481 is a prime.

It is not a weakly prime, because it can be changed into another prime (73422917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36711456 + 36711457.

It is an arithmetic number, because the mean of its divisors is an integer number (36711457).

Almost surely, 2^73422913 is an apocalyptic number.

It is an amenable number.

73422913 is a deficient number, since it is larger than the sum of its proper divisors (1).

73422913 is an equidigital number, since it uses as much as digits as its factorization.

73422913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 31.

The square root of 73422913 is about 8568.7171151812. The cubic root of 73422913 is about 418.7394422823.

The spelling of 73422913 in words is "seventy-three million, four hundred twenty-two thousand, nine hundred thirteen".