871772429 has 8 divisors (see below), whose sum is σ = 976728288. Its totient is φ = 771100560.

The previous prime is 871772417. The next prime is 871772437. The reversal of 871772429 is 924277178.

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 871772429 - 2⁴ = 871772413 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 (871772479) 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, 1070567 + ... + 1071380.

It is an arithmetic number, because the mean of its divisors is an integer number (122091036).

Almost surely, 2^871772429 is an apocalyptic number.

It is an amenable number.

871772429 is a deficient number, since it is larger than the sum of its proper divisors (104955859).

871772429 is a wasteful number, since it uses less digits than its factorization.

871772429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141995.

The product of its digits is 395136, while the sum is 47.

The square root of 871772429 is about 29525.7926057879. The cubic root of 871772429 is about 955.2881193478.

The spelling of 871772429 in words is "eight hundred seventy-one million, seven hundred seventy-two thousand, four hundred twenty-nine".