83723789 has 4 divisors (see below), whose sum is σ = 84099456. Its totient is φ = 83348124.

The previous prime is 83723767. The next prime is 83723791. The reversal of 83723789 is 98732738.

It is a happy number.

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 83723789 - 2⁸ = 83723533 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 (83723389) 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, 187499 + ... + 187944.

It is an arithmetic number, because the mean of its divisors is an integer number (21024864).

Almost surely, 2^83723789 is an apocalyptic number.

It is an amenable number.

83723789 is a deficient number, since it is larger than the sum of its proper divisors (375667).

83723789 is a wasteful number, since it uses less digits than its factorization.

83723789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375666.

The product of its digits is 508032, while the sum is 47.

The square root of 83723789 is about 9150.0704368874. The cubic root of 83723789 is about 437.4713585604.

The spelling of 83723789 in words is "eighty-three million, seven hundred twenty-three thousand, seven hundred eighty-nine".