73439964 has 54 divisors (see below), whose sum is σ = 201035016. Its totient is φ = 22595040.

The previous prime is 73439957. The next prime is 73439981. The reversal of 73439964 is 46993437.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 49 + ... + 12119.

Almost surely, 2^73439964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73439964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100517508).

73439964 is an abundant number, since it is smaller than the sum of its proper divisors (127595052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73439964 is a wasteful number, since it uses less digits than its factorization.

73439964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12107 (or 12089 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The square root of 73439964 is about 8569.7120138310. The cubic root of 73439964 is about 418.7718543877.

The spelling of 73439964 in words is "seventy-three million, four hundred thirty-nine thousand, nine hundred sixty-four".