71949589 has 8 divisors (see below), whose sum is σ = 75182400. Its totient is φ = 68725536.

The previous prime is 71949569. The next prime is 71949601. The reversal of 71949589 is 98594917.

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

It is a cyclic number.

It is not a de Polignac number, because 71949589 - 2⁵ = 71949557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71949569) 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, 19137 + ... + 22585.

It is an arithmetic number, because the mean of its divisors is an integer number (9397800).

Almost surely, 2^71949589 is an apocalyptic number.

It is an amenable number.

71949589 is a deficient number, since it is larger than the sum of its proper divisors (3232811).

71949589 is a wasteful number, since it uses less digits than its factorization.

71949589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4379.

The product of its digits is 816480, while the sum is 52.

The square root of 71949589 is about 8482.3103574439. The cubic root of 71949589 is about 415.9196501774.

The spelling of 71949589 in words is "seventy-one million, nine hundred forty-nine thousand, five hundred eighty-nine".