73977445 has 16 divisors (see below), whose sum is σ = 91779840. Its totient is φ = 57211200.

The previous prime is 73977443. The next prime is 73977451. The reversal of 73977445 is 54477937.

It is not a de Polignac number, because 73977445 - 2¹ = 73977443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73977395 and 73977404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73977443) 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 15 ways as a sum of consecutive naturals, for example, 15940 + ... + 20050.

It is an arithmetic number, because the mean of its divisors is an integer number (5736240).

Almost surely, 2^73977445 is an apocalyptic number.

It is an amenable number.

73977445 is a deficient number, since it is larger than the sum of its proper divisors (17802395).

73977445 is a wasteful number, since it uses less digits than its factorization.

73977445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4236.

The product of its digits is 740880, while the sum is 46.

The square root of 73977445 is about 8601.0141843855. The cubic root of 73977445 is about 419.7909863263.

The spelling of 73977445 in words is "seventy-three million, nine hundred seventy-seven thousand, four hundred forty-five".