873742839 has 4 divisors (see below), whose sum is σ = 1164990456. Its totient is φ = 582495224.

The previous prime is 873742823. The next prime is 873742853. The reversal of 873742839 is 938247378.

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 873742839 - 2⁴ = 873742823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 873742791 and 873742800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (873742889) 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, 145623804 + ... + 145623809.

It is an arithmetic number, because the mean of its divisors is an integer number (291247614).

Almost surely, 2^873742839 is an apocalyptic number.

873742839 is a deficient number, since it is larger than the sum of its proper divisors (291247617).

873742839 is a wasteful number, since it uses less digits than its factorization.

873742839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291247616.

The product of its digits is 2032128, while the sum is 51.

The square root of 873742839 is about 29559.1413779223. The cubic root of 873742839 is about 956.0073027896.

The spelling of 873742839 in words is "eight hundred seventy-three million, seven hundred forty-two thousand, eight hundred thirty-nine".