80871489 has 6 divisors (see below), whose sum is σ = 116814386. Its totient is φ = 53914320.

The previous prime is 80871487. The next prime is 80871491. The reversal of 80871489 is 98417808.

It is an interprime number because it is at equal distance from previous prime (80871487) and next prime (80871491).

It can be written as a sum of positive squares in only one way, i.e., 73822464 + 7049025 = 8592^2 + 2655^2 .

It is not a de Polignac number, because 80871489 - 2¹ = 80871487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80871487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4492852 + ... + 4492869.

Almost surely, 2^80871489 is an apocalyptic number.

It is an amenable number.

80871489 is a deficient number, since it is larger than the sum of its proper divisors (35942897).

80871489 is a wasteful number, since it uses less digits than its factorization.

80871489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8985727 (or 8985724 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 80871489 is about 8992.8576659480. The cubic root of 80871489 is about 432.4459290663.

The spelling of 80871489 in words is "eighty million, eight hundred seventy-one thousand, four hundred eighty-nine".