73891485 has 12 divisors (see below), whose sum is σ = 128078652. Its totient is φ = 39408768.

The previous prime is 73891483. The next prime is 73891529. The reversal of 73891485 is 58419837.

It can be written as a sum of positive squares in 2 ways, for example, as 44796249 + 29095236 = 6693^2 + 5394^2 .

It is not a de Polignac number, because 73891485 - 2¹ = 73891483 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1642033 = 73891485 / (7 + 3 + 8 + 9 + 1 + 4 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 73891485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73891483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 820972 + ... + 821061.

It is an arithmetic number, because the mean of its divisors is an integer number (10673221).

Almost surely, 2^73891485 is an apocalyptic number.

It is an amenable number.

73891485 is a deficient number, since it is larger than the sum of its proper divisors (54187167).

73891485 is a wasteful number, since it uses less digits than its factorization.

73891485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642044 (or 1642041 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 73891485 is about 8596.0156467982. The cubic root of 73891485 is about 419.6283276541.

The spelling of 73891485 in words is "seventy-three million, eight hundred ninety-one thousand, four hundred eighty-five".