108439221 has 16 divisors (see below), whose sum is σ = 158114880. Its totient is φ = 65560320.

The previous prime is 108439211. The next prime is 108439229. The reversal of 108439221 is 122934801.

It is not a de Polignac number, because 108439221 - 2¹⁵ = 108406453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108439229) 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, 10495 + ... + 18083.

It is an arithmetic number, because the mean of its divisors is an integer number (9882180).

Almost surely, 2^108439221 is an apocalyptic number.

108439221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

108439221 is a deficient number, since it is larger than the sum of its proper divisors (49675659).

108439221 is a wasteful number, since it uses less digits than its factorization.

108439221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8036.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 108439221 is about 10413.4154339487. The cubic root of 108439221 is about 476.8650163698.

The spelling of 108439221 in words is "one hundred eight million, four hundred thirty-nine thousand, two hundred twenty-one".