72853139 has 4 divisors (see below), whose sum is σ = 72877056. Its totient is φ = 72829224.

The previous prime is 72853129. The next prime is 72853147. The reversal of 72853139 is 93135827.

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 72853139 - 2¹² = 72849043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72853129) 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, 6584 + ... + 13749.

It is an arithmetic number, because the mean of its divisors is an integer number (18219264).

Almost surely, 2^72853139 is an apocalyptic number.

72853139 is a deficient number, since it is larger than the sum of its proper divisors (23917).

72853139 is a wasteful number, since it uses less digits than its factorization.

72853139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23916.

The product of its digits is 45360, while the sum is 38.

The square root of 72853139 is about 8535.4050284682. The cubic root of 72853139 is about 417.6534657589.

The spelling of 72853139 in words is "seventy-two million, eight hundred fifty-three thousand, one hundred thirty-nine".