109491747 has 8 divisors (see below), whose sum is σ = 154576656. Its totient is φ = 68700672.

The previous prime is 109491743. The next prime is 109491749. The reversal of 109491747 is 747194901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 109491747 - 2² = 109491743 is a prime.

It is a super-2 number, since 2×109491747² = 23976885322224018, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 109491699 and 109491708.

It is not an unprimeable number, because it can be changed into a prime (109491743) 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 7 ways as a sum of consecutive naturals, for example, 1073398 + ... + 1073499.

It is an arithmetic number, because the mean of its divisors is an integer number (19322082).

Almost surely, 2^109491747 is an apocalyptic number.

109491747 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

109491747 is a deficient number, since it is larger than the sum of its proper divisors (45084909).

109491747 is a wasteful number, since it uses less digits than its factorization.

109491747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2146917.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 109491747 is about 10463.8304172038. The cubic root of 109491747 is about 478.4028905985.

The spelling of 109491747 in words is "one hundred nine million, four hundred ninety-one thousand, seven hundred forty-seven".