109939747 has 4 divisors (see below), whose sum is σ = 114719760. Its totient is φ = 105159736.

The previous prime is 109939729. The next prime is 109939771. The reversal of 109939747 is 747939901.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 747939901 = 17599 ⋅42499.

It is a cyclic number.

It is not a de Polignac number, because 109939747 - 2⁷ = 109939619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109939747.

It is not an unprimeable number, because it can be changed into a prime (109939727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2389972 + ... + 2390017.

It is an arithmetic number, because the mean of its divisors is an integer number (28679940).

Almost surely, 2^109939747 is an apocalyptic number.

109939747 is a deficient number, since it is larger than the sum of its proper divisors (4780013).

109939747 is an equidigital number, since it uses as much as digits as its factorization.

109939747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4780012.

The product of its (nonzero) digits is 428652, while the sum is 49.

The square root of 109939747 is about 10485.2156391750. The cubic root of 109939747 is about 479.0544856613.

The spelling of 109939747 in words is "one hundred nine million, nine hundred thirty-nine thousand, seven hundred forty-seven".