872543769 has 4 divisors (see below), whose sum is σ = 1163391696. Its totient is φ = 581695844.

The previous prime is 872543761. The next prime is 872543773. The reversal of 872543769 is 967345278.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 872543769 - 2³ = 872543761 is a prime.

It is a super-2 number, since 2×872543769² = 1522665257641450722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (872543761) 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 3 ways as a sum of consecutive naturals, for example, 145423959 + ... + 145423964.

It is an arithmetic number, because the mean of its divisors is an integer number (290847924).

Almost surely, 2^872543769 is an apocalyptic number.

It is an amenable number.

872543769 is a deficient number, since it is larger than the sum of its proper divisors (290847927).

872543769 is a wasteful number, since it uses less digits than its factorization.

872543769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290847926.

The product of its digits is 2540160, while the sum is 51.

The square root of 872543769 is about 29538.8518564957. The cubic root of 872543769 is about 955.5697810519.

The spelling of 872543769 in words is "eight hundred seventy-two million, five hundred forty-three thousand, seven hundred sixty-nine".