108391804 has 6 divisors (see below), whose sum is σ = 189685664. Its totient is φ = 54195900.

The previous prime is 108391799. The next prime is 108391807. The reversal of 108391804 is 408193801.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 108391804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108391807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13548972 + ... + 13548979.

Almost surely, 2^108391804 is an apocalyptic number.

It is an amenable number.

108391804 is a deficient number, since it is larger than the sum of its proper divisors (81293860).

108391804 is a wasteful number, since it uses less digits than its factorization.

108391804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27097955 (or 27097953 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 108391804 is about 10411.1384584012. The cubic root of 108391804 is about 476.7955003010.

The spelling of 108391804 in words is "one hundred eight million, three hundred ninety-one thousand, eight hundred four".