73989573 has 8 divisors (see below), whose sum is σ = 112746048. Its totient is φ = 42279744.

The previous prime is 73989571. The next prime is 73989577. The reversal of 73989573 is 37598937.

It is a happy number.

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

It is not a de Polignac number, because 73989573 - 2¹ = 73989571 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73989571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1761636 + ... + 1761677.

It is an arithmetic number, because the mean of its divisors is an integer number (14093256).

Almost surely, 2^73989573 is an apocalyptic number.

It is an amenable number.

73989573 is a deficient number, since it is larger than the sum of its proper divisors (38756475).

73989573 is a wasteful number, since it uses less digits than its factorization.

73989573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3523323.

The product of its digits is 1428840, while the sum is 51.

The square root of 73989573 is about 8601.7191886274. The cubic root of 73989573 is about 419.8139255113.

The spelling of 73989573 in words is "seventy-three million, nine hundred eighty-nine thousand, five hundred seventy-three".