72259989 has 8 divisors (see below), whose sum is σ = 97247520. Its totient is φ = 47722896.

The previous prime is 72259987. The next prime is 72259991. The reversal of 72259989 is 98995227.

It is an interprime number because it is at equal distance from previous prime (72259987) and next prime (72259991).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72259989 - 2¹ = 72259987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72259981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112234 + ... + 112875.

It is an arithmetic number, because the mean of its divisors is an integer number (12155940).

Almost surely, 2^72259989 is an apocalyptic number.

It is an amenable number.

72259989 is a deficient number, since it is larger than the sum of its proper divisors (24987531).

72259989 is a wasteful number, since it uses less digits than its factorization.

72259989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225219.

The product of its digits is 816480, while the sum is 51.

The square root of 72259989 is about 8500.5875679273. The cubic root of 72259989 is about 416.5169028341.

The spelling of 72259989 in words is "seventy-two million, two hundred fifty-nine thousand, nine hundred eighty-nine".