109438439 has 16 divisors (see below), whose sum is σ = 125072640. Its totient is φ = 94786560.

The previous prime is 109438429. The next prime is 109438447. The reversal of 109438439 is 934834901.

It is not a de Polignac number, because 109438439 - 2¹² = 109434343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 109438396 and 109438405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109438409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76967 + ... + 78375.

It is an arithmetic number, because the mean of its divisors is an integer number (7817040).

Almost surely, 2^109438439 is an apocalyptic number.

109438439 is a deficient number, since it is larger than the sum of its proper divisors (15634201).

109438439 is a wasteful number, since it uses less digits than its factorization.

109438439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1750.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 109438439 is about 10461.2828563231. The cubic root of 109438439 is about 478.3252383494.

The spelling of 109438439 in words is "one hundred nine million, four hundred thirty-eight thousand, four hundred thirty-nine".