109381986 has 24 divisors (see below), whose sum is σ = 270850944. Its totient is φ = 31251960.

The previous prime is 109381969. The next prime is 109381991. The reversal of 109381986 is 689183901.

It is a super-2 number, since 2×109381986² = 23928837722608392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 433930 + ... + 434181.

It is an arithmetic number, because the mean of its divisors is an integer number (11285456).

Almost surely, 2^109381986 is an apocalyptic number.

109381986 is an abundant number, since it is smaller than the sum of its proper divisors (161468958).

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

109381986 is a wasteful number, since it uses less digits than its factorization.

109381986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868126 (or 868123 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 109381986 is about 10458.5843210255. The cubic root of 109381986 is about 478.2429773714.

The spelling of 109381986 in words is "one hundred nine million, three hundred eighty-one thousand, nine hundred eighty-six".