872434369 has 3 divisors (see below), whose sum is σ = 872463907. Its totient is φ = 872404832.

The previous prime is 872434349. The next prime is 872434379. The reversal of 872434369 is 963434278.

The square root of 872434369 is 29537.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1476225 + 870958144 = 1215^2 + 29512^2 .

It is a de Polignac number, because none of the positive numbers 2^k-872434369 is a prime.

It is a super-2 number, since 2×872434369² = 1522283456424856322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872434309) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 14769 + ... + 44305.

Almost surely, 2^872434369 is an apocalyptic number.

872434369 is the 29537-th square number.

872434369 is the 14769-th centered octagonal number.

It is an amenable number.

872434369 is a deficient number, since it is larger than the sum of its proper divisors (29538).

872434369 is an frugal number, since it uses more digits than its factorization.

872434369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59074 (or 29537 counting only the distinct ones).

The product of its digits is 870912, while the sum is 46.

The cubic root of 872434369 is about 955.5298427675.

Subtracting 872434369 from its reverse (963434278), we obtain a palindrome (90999909).

The spelling of 872434369 in words is "eight hundred seventy-two million, four hundred thirty-four thousand, three hundred sixty-nine".