83723239 has 4 divisors (see below), whose sum is σ = 83775424. Its totient is φ = 83671056.

The previous prime is 83723231. The next prime is 83723251. The reversal of 83723239 is 93232738.

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 83723239 - 2³ = 83723231 is a prime.

It is a super-2 number, since 2×83723239² = 14019161497302242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83723198 and 83723207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83723231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23607 + ... + 26920.

It is an arithmetic number, because the mean of its divisors is an integer number (20943856).

Almost surely, 2^83723239 is an apocalyptic number.

83723239 is a deficient number, since it is larger than the sum of its proper divisors (52185).

83723239 is a wasteful number, since it uses less digits than its factorization.

83723239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52184.

The product of its digits is 54432, while the sum is 37.

The square root of 83723239 is about 9150.0403824245. The cubic root of 83723239 is about 437.4704006097.

It can be divided in two parts, 8372 and 3239, that added together give a palindrome (11611).

The spelling of 83723239 in words is "eighty-three million, seven hundred twenty-three thousand, two hundred thirty-nine".