72390883 has 2 divisors, whose sum is σ = 72390884. Its totient is φ = 72390882.

The previous prime is 72390881. The next prime is 72390911. The reversal of 72390883 is 38809327.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (38809327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72390883 - 2¹ = 72390881 is a prime.

Together with 72390881, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (72390881) 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, 36195441 + 36195442.

It is an arithmetic number, because the mean of its divisors is an integer number (36195442).

Almost surely, 2^72390883 is an apocalyptic number.

72390883 is a deficient number, since it is larger than the sum of its proper divisors (1).

72390883 is an equidigital number, since it uses as much as digits as its factorization.

72390883 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 72390883 is about 8508.2831993299. The cubic root of 72390883 is about 416.7682483705.

The spelling of 72390883 in words is "seventy-two million, three hundred ninety thousand, eight hundred eighty-three".