108439764 has 24 divisors (see below), whose sum is σ = 266343840. Its totient is φ = 34244064.

The previous prime is 108439757. The next prime is 108439769. The reversal of 108439764 is 467934801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108439769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237579 + ... + 238034.

It is an arithmetic number, because the mean of its divisors is an integer number (11097660).

Almost surely, 2^108439764 is an apocalyptic number.

It is an amenable number.

108439764 is an abundant number, since it is smaller than the sum of its proper divisors (157904076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

108439764 is a wasteful number, since it uses less digits than its factorization.

108439764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475639 (or 475637 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 108439764 is about 10413.4415060536. The cubic root of 108439764 is about 476.8658123219.

The spelling of 108439764 in words is "one hundred eight million, four hundred thirty-nine thousand, seven hundred sixty-four".