73997449 has 4 divisors (see below), whose sum is σ = 74217364. Its totient is φ = 73777536.

The previous prime is 73997431. The next prime is 73997459. The reversal of 73997449 is 94479937.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43824400 + 30173049 = 6620^2 + 5493^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73997449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73997396 and 73997405.

It is not an unprimeable number, because it can be changed into a prime (73997459) 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 in 3 ways as a sum of consecutive naturals, for example, 109452 + ... + 110125.

It is an arithmetic number, because the mean of its divisors is an integer number (18554341).

Almost surely, 2^73997449 is an apocalyptic number.

It is an amenable number.

73997449 is a deficient number, since it is larger than the sum of its proper divisors (219915).

73997449 is a wasteful number, since it uses less digits than its factorization.

73997449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219914.

The product of its digits is 1714608, while the sum is 52.

The square root of 73997449 is about 8602.1769919015. The cubic root of 73997449 is about 419.8288210208.

The spelling of 73997449 in words is "seventy-three million, nine hundred ninety-seven thousand, four hundred forty-nine".