109428949 has 8 divisors (see below), whose sum is σ = 132418368. Its totient is φ = 88278720.

The previous prime is 109428947. The next prime is 109428967. The reversal of 109428949 is 949824901.

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

It is a cyclic number.

It is not a de Polignac number, because 109428949 - 2¹ = 109428947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109428899 and 109428908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109428947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459667 + ... + 459904.

It is an arithmetic number, because the mean of its divisors is an integer number (16552296).

Almost surely, 2^109428949 is an apocalyptic number.

It is an amenable number.

109428949 is a deficient number, since it is larger than the sum of its proper divisors (22989419).

109428949 is an equidigital number, since it uses as much as digits as its factorization.

109428949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919595.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 109428949 is about 10460.8292692310. The cubic root of 109428949 is about 478.3114118921.

It can be divided in two parts, 10942 and 8949, that added together give a palindrome (19891).

The spelling of 109428949 in words is "one hundred nine million, four hundred twenty-eight thousand, nine hundred forty-nine".