869342431 has 4 divisors (see below), whose sum is σ = 907139952. Its totient is φ = 831544912.

The previous prime is 869342429. The next prime is 869342443. The reversal of 869342431 is 134243968.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 869342431 - 2¹ = 869342429 is a prime.

It is a super-2 number, since 2×869342431² = 1511512524673979522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869342401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18898726 + ... + 18898771.

It is an arithmetic number, because the mean of its divisors is an integer number (226784988).

Almost surely, 2^869342431 is an apocalyptic number.

869342431 is a deficient number, since it is larger than the sum of its proper divisors (37797521).

869342431 is a wasteful number, since it uses less digits than its factorization.

869342431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37797520.

The product of its digits is 124416, while the sum is 40.

The square root of 869342431 is about 29484.6134619398. The cubic root of 869342431 is about 954.3996961968.

The spelling of 869342431 in words is "eight hundred sixty-nine million, three hundred forty-two thousand, four hundred thirty-one".