73422639 has 8 divisors (see below), whose sum is σ = 108774320. Its totient is φ = 48948408.

The previous prime is 73422619. The next prime is 73422641. The reversal of 73422639 is 93622437.

It is a happy number.

It is not a de Polignac number, because 73422639 - 2⁵ = 73422607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73422619) 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, 1359652 + ... + 1359705.

It is an arithmetic number, because the mean of its divisors is an integer number (13596790).

Almost surely, 2^73422639 is an apocalyptic number.

73422639 is a deficient number, since it is larger than the sum of its proper divisors (35351681).

73422639 is a wasteful number, since it uses less digits than its factorization.

73422639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2719366 (or 2719360 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 73422639 is about 8568.7011267753. The cubic root of 73422639 is about 418.7389213970.

The spelling of 73422639 in words is "seventy-three million, four hundred twenty-two thousand, six hundred thirty-nine".