71283489 has 8 divisors (see below), whose sum is σ = 95106432. Its totient is φ = 47491440.

The previous prime is 71283481. The next prime is 71283523. The reversal of 71283489 is 98438217.

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

It is not a de Polignac number, because 71283489 - 2³ = 71283481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71283489.

It is not an unprimeable number, because it can be changed into a prime (71283481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1657 + ... + 12054.

It is an arithmetic number, because the mean of its divisors is an integer number (11888304).

Almost surely, 2^71283489 is an apocalyptic number.

It is an amenable number.

71283489 is a deficient number, since it is larger than the sum of its proper divisors (23822943).

71283489 is a wasteful number, since it uses less digits than its factorization.

71283489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15447.

The product of its digits is 96768, while the sum is 42.

The square root of 71283489 is about 8442.9549921814. The cubic root of 71283489 is about 414.6321586922.

The spelling of 71283489 in words is "seventy-one million, two hundred eighty-three thousand, four hundred eighty-nine".