108269639 has 4 divisors (see below), whose sum is σ = 111762240. Its totient is φ = 104777040.

The previous prime is 108269633. The next prime is 108269641. The reversal of 108269639 is 936962801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108269639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 108269639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108269633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1746254 + ... + 1746315.

It is an arithmetic number, because the mean of its divisors is an integer number (27940560).

Almost surely, 2^108269639 is an apocalyptic number.

108269639 is a deficient number, since it is larger than the sum of its proper divisors (3492601).

108269639 is an equidigital number, since it uses as much as digits as its factorization.

108269639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3492600.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 108269639 is about 10405.2697706499. The cubic root of 108269639 is about 476.6163058819.

The spelling of 108269639 in words is "one hundred eight million, two hundred sixty-nine thousand, six hundred thirty-nine".