872671309 has 8 divisors (see below), whose sum is σ = 881101440. Its totient is φ = 864281856.

The previous prime is 872671249. The next prime is 872671321. The reversal of 872671309 is 903176278.

It is a happy number.

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 872671309 - 2¹¹ = 872669261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872671399) 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, 33852 + ... + 53770.

It is an arithmetic number, because the mean of its divisors is an integer number (110137680).

Almost surely, 2^872671309 is an apocalyptic number.

It is an amenable number.

872671309 is a deficient number, since it is larger than the sum of its proper divisors (8430131).

872671309 is a wasteful number, since it uses less digits than its factorization.

872671309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20339.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 872671309 is about 29541.0106292930. The cubic root of 872671309 is about 955.6163374297.

The spelling of 872671309 in words is "eight hundred seventy-two million, six hundred seventy-one thousand, three hundred nine".