71847489 has 16 divisors (see below), whose sum is σ = 111549312. Its totient is φ = 40280448.

The previous prime is 71847487. The next prime is 71847499. The reversal of 71847489 is 98474817.

It is not a de Polignac number, because 71847489 - 2¹ = 71847487 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71847481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31164 + ... + 33389.

It is an arithmetic number, because the mean of its divisors is an integer number (6971832).

Almost surely, 2^71847489 is an apocalyptic number.

It is an amenable number.

71847489 is a deficient number, since it is larger than the sum of its proper divisors (39701823).

71847489 is a wasteful number, since it uses less digits than its factorization.

71847489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64616.

The product of its digits is 451584, while the sum is 48.

The square root of 71847489 is about 8476.2898133558. The cubic root of 71847489 is about 415.7228202416.

The spelling of 71847489 in words is "seventy-one million, eight hundred forty-seven thousand, four hundred eighty-nine".