72883493 has 2 divisors, whose sum is σ = 72883494. Its totient is φ = 72883492.

The previous prime is 72883477. The next prime is 72883501. The reversal of 72883493 is 39438827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72216004 + 667489 = 8498^2 + 817^2 .

It is a cyclic number.

It is not a de Polignac number, because 72883493 - 2⁴ = 72883477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72883453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36441746 + 36441747.

It is an arithmetic number, because the mean of its divisors is an integer number (36441747).

Almost surely, 2^72883493 is an apocalyptic number.

It is an amenable number.

72883493 is a deficient number, since it is larger than the sum of its proper divisors (1).

72883493 is an equidigital number, since it uses as much as digits as its factorization.

72883493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 44.

The square root of 72883493 is about 8537.1829662951. The cubic root of 72883493 is about 417.7114623130.

The spelling of 72883493 in words is "seventy-two million, eight hundred eighty-three thousand, four hundred ninety-three".