71110989 has 12 divisors (see below), whose sum is σ = 104457600. Its totient is φ = 46603464.

The previous prime is 71110967. The next prime is 71111011. The reversal of 71110989 is 98901117.

It is an interprime number because it is at equal distance from previous prime (71110967) and next prime (71111011).

It is not a de Polignac number, because 71110989 - 2⁹ = 71110477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71110489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66429 + ... + 67490.

It is an arithmetic number, because the mean of its divisors is an integer number (8704800).

Almost surely, 2^71110989 is an apocalyptic number.

It is an amenable number.

71110989 is a deficient number, since it is larger than the sum of its proper divisors (33346611).

71110989 is a wasteful number, since it uses less digits than its factorization.

71110989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133984 (or 133981 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 36.

The square root of 71110989 is about 8432.7331868143. The cubic root of 71110989 is about 414.2974303181.

The spelling of 71110989 in words is "seventy-one million, one hundred ten thousand, nine hundred eighty-nine".