72893539 has 2 divisors, whose sum is σ = 72893540. Its totient is φ = 72893538.

The previous prime is 72893533. The next prime is 72893549. The reversal of 72893539 is 93539827.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72893539 - 2⁵ = 72893507 is a prime.

It is not a weakly prime, because it can be changed into another prime (72893533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36446769 + 36446770.

It is an arithmetic number, because the mean of its divisors is an integer number (36446770).

Almost surely, 2^72893539 is an apocalyptic number.

72893539 is a deficient number, since it is larger than the sum of its proper divisors (1).

72893539 is an equidigital number, since it uses as much as digits as its factorization.

72893539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 46.

The square root of 72893539 is about 8537.7713134049. The cubic root of 72893539 is about 417.7306533826.

The spelling of 72893539 in words is "seventy-two million, eight hundred ninety-three thousand, five hundred thirty-nine".