109839723 has 24 divisors (see below), whose sum is σ = 170931600. Its totient is φ = 62556480.

The previous prime is 109839721. The next prime is 109839731. The reversal of 109839723 is 327938901.

It is not a de Polignac number, because 109839723 - 2¹ = 109839721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109839721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50233 + ... + 52373.

It is an arithmetic number, because the mean of its divisors is an integer number (7122150).

Almost surely, 2^109839723 is an apocalyptic number.

109839723 is a deficient number, since it is larger than the sum of its proper divisors (61091877).

109839723 is a wasteful number, since it uses less digits than its factorization.

109839723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507 (or 2500 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 109839723 is about 10480.4447901795. Note that the first 3 decimals coincide. The cubic root of 109839723 is about 478.9091591339.

It can be divided in two parts, 10983 and 9723, that added together give a triangular number (20706 = T₂₀₃).

The spelling of 109839723 in words is "one hundred nine million, eight hundred thirty-nine thousand, seven hundred twenty-three".