73144969 has 2 divisors, whose sum is σ = 73144970. Its totient is φ = 73144968.

The previous prime is 73144937. The next prime is 73144987. The reversal of 73144969 is 96944137.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46240000 + 26904969 = 6800^2 + 5187^2 .

It is a cyclic number.

It is not a de Polignac number, because 73144969 - 2⁵ = 73144937 is a prime.

It is a super-2 number, since 2×73144969² = 10700372980021922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73144909) 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, 36572484 + 36572485.

It is an arithmetic number, because the mean of its divisors is an integer number (36572485).

Almost surely, 2^73144969 is an apocalyptic number.

It is an amenable number.

73144969 is a deficient number, since it is larger than the sum of its proper divisors (1).

73144969 is an equidigital number, since it uses as much as digits as its factorization.

73144969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 43.

The square root of 73144969 is about 8552.4832066482. The cubic root of 73144969 is about 418.2103917850.

The spelling of 73144969 in words is "seventy-three million, one hundred forty-four thousand, nine hundred sixty-nine".