871724949 has 16 divisors (see below), whose sum is σ = 1203681600. Its totient is φ = 560502656.

The previous prime is 871724927. The next prime is 871724951. The reversal of 871724949 is 949427178.

It is a cyclic number.

It is not a de Polignac number, because 871724949 - 2⁹ = 871724437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871724989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83737 + ... + 93569.

It is an arithmetic number, because the mean of its divisors is an integer number (75230100).

Almost surely, 2^871724949 is an apocalyptic number.

It is an amenable number.

871724949 is a deficient number, since it is larger than the sum of its proper divisors (331956651).

871724949 is a wasteful number, since it uses less digits than its factorization.

871724949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10884.

The product of its digits is 1016064, while the sum is 51.

The square root of 871724949 is about 29524.9885520723. The cubic root of 871724949 is about 955.2707761736.

The spelling of 871724949 in words is "eight hundred seventy-one million, seven hundred twenty-four thousand, nine hundred forty-nine".