109682991 has 90 divisors (see below), whose sum is σ = 196205856. Its totient is φ = 60944400.

The previous prime is 109682987. The next prime is 109683019. The reversal of 109682991 is 199286901.

It is not a de Polignac number, because 109682991 - 2² = 109682987 is a prime.

It is a super-4 number, since 4×109682991⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109682971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 3538146 + ... + 3538176.

Almost surely, 2^109682991 is an apocalyptic number.

109682991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

109682991 is a deficient number, since it is larger than the sum of its proper divisors (86522865).

109682991 is a wasteful number, since it uses less digits than its factorization.

109682991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The square root of 109682991 is about 10472.9647664833. The cubic root of 109682991 is about 478.6812630740.

The spelling of 109682991 in words is "one hundred nine million, six hundred eighty-two thousand, nine hundred ninety-one".