73394639 has 4 divisors (see below), whose sum is σ = 75762240. Its totient is φ = 71027040.

The previous prime is 73394611. The next prime is 73394653. The reversal of 73394639 is 93649337.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73394639 - 2⁸ = 73394383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73394639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73394339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1183754 + ... + 1183815.

It is an arithmetic number, because the mean of its divisors is an integer number (18940560).

Almost surely, 2^73394639 is an apocalyptic number.

73394639 is a deficient number, since it is larger than the sum of its proper divisors (2367601).

73394639 is a wasteful number, since it uses less digits than its factorization.

73394639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367600.

The product of its digits is 367416, while the sum is 44.

The square root of 73394639 is about 8567.0671177481. The cubic root of 73394639 is about 418.6856854074.

The spelling of 73394639 in words is "seventy-three million, three hundred ninety-four thousand, six hundred thirty-nine".