73972389 has 8 divisors (see below), whose sum is σ = 104431680. Its totient is φ = 46414016.

The previous prime is 73972387. The next prime is 73972397. The reversal of 73972389 is 98327937.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73972389 - 2¹ = 73972387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73972387) 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 in 7 ways as a sum of consecutive naturals, for example, 725169 + ... + 725270.

It is an arithmetic number, because the mean of its divisors is an integer number (13053960).

Almost surely, 2^73972389 is an apocalyptic number.

It is an amenable number.

73972389 is a deficient number, since it is larger than the sum of its proper divisors (30459291).

73972389 is a wasteful number, since it uses less digits than its factorization.

73972389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450459.

The product of its digits is 571536, while the sum is 48.

The square root of 73972389 is about 8600.7202605363. The cubic root of 73972389 is about 419.7814225483.

The spelling of 73972389 in words is "seventy-three million, nine hundred seventy-two thousand, three hundred eighty-nine".