72893439 has 14 divisors (see below), whose sum is σ = 109291256. Its totient is φ = 48595140.

The previous prime is 72893413. The next prime is 72893459. The reversal of 72893439 is 93439827.

It is a happy number.

It is not a de Polignac number, because 72893439 - 2⁷ = 72893311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72893394 and 72893403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72893459) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 49267 + ... + 50724.

Almost surely, 2^72893439 is an apocalyptic number.

72893439 is a deficient number, since it is larger than the sum of its proper divisors (36397817).

72893439 is an frugal number, since it uses more digits than its factorization.

72893439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100009 (or 99994 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 72893439 is about 8537.7654570736. The cubic root of 72893439 is about 417.7304623593.

The spelling of 72893439 in words is "seventy-two million, eight hundred ninety-three thousand, four hundred thirty-nine".