109891864 has 16 divisors (see below), whose sum is σ = 208870920. Its totient is φ = 54192960.

The previous prime is 109891853. The next prime is 109891879. The reversal of 109891864 is 468198901.

It is a congruent number.

It is an unprimeable number.

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, 93502 + ... + 94669.

Almost surely, 2^109891864 is an apocalyptic number.

It is an amenable number.

109891864 is a deficient number, since it is larger than the sum of its proper divisors (98979056).

109891864 is a wasteful number, since it uses less digits than its factorization.

109891864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188250 (or 188246 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 109891864 is about 10482.9320325947. The cubic root of 109891864 is about 478.9849266602.

The spelling of 109891864 in words is "one hundred nine million, eight hundred ninety-one thousand, eight hundred sixty-four".