71396889 has 16 divisors (see below), whose sum is σ = 106102080. Its totient is φ = 42439680.

The previous prime is 71396881. The next prime is 71396891. The reversal of 71396889 is 98869317.

It is not a de Polignac number, because 71396889 - 2³ = 71396881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (71396881) 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 in 15 ways as a sum of consecutive naturals, for example, 35872 + ... + 37809.

It is an arithmetic number, because the mean of its divisors is an integer number (6631380).

Almost surely, 2^71396889 is an apocalyptic number.

It is an amenable number.

71396889 is a deficient number, since it is larger than the sum of its proper divisors (34705191).

71396889 is a wasteful number, since it uses less digits than its factorization.

71396889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73720.

The product of its digits is 653184, while the sum is 51.

The square root of 71396889 is about 8449.6679816428. The cubic root of 71396889 is about 414.8519121312.

It can be divided in two parts, 7139 and 6889, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 71396889 in words is "seventy-one million, three hundred ninety-six thousand, eight hundred eighty-nine".