871722049 has 8 divisors (see below), whose sum is σ = 983761920. Its totient is φ = 765147600.

The previous prime is 871722043. The next prime is 871722121. The reversal of 871722049 is 940227178.

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

It is not a de Polignac number, because 871722049 - 2⁵ = 871722017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (871722043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1366017 + ... + 1366654.

It is an arithmetic number, because the mean of its divisors is an integer number (122970240).

Almost surely, 2^871722049 is an apocalyptic number.

It is an amenable number.

871722049 is a deficient number, since it is larger than the sum of its proper divisors (112039871).

871722049 is a wasteful number, since it uses less digits than its factorization.

871722049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732711.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 871722049 is about 29524.9394410895. The cubic root of 871722049 is about 955.2697168607.

The spelling of 871722049 in words is "eight hundred seventy-one million, seven hundred twenty-two thousand, forty-nine".