109438965 has 16 divisors (see below), whose sum is σ = 194558400. Its totient is φ = 58367376.

The previous prime is 109438961. The next prime is 109438969. The reversal of 109438965 is 569834901.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (109438961) and next prime (109438969).

It is not a de Polignac number, because 109438965 - 2² = 109438961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 109438965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109438961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 405195 + ... + 405464.

It is an arithmetic number, because the mean of its divisors is an integer number (12159900).

Almost surely, 2^109438965 is an apocalyptic number.

109438965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109438965 is a deficient number, since it is larger than the sum of its proper divisors (85119435).

109438965 is an equidigital number, since it uses as much as digits as its factorization.

109438965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810673 (or 810667 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 109438965 is about 10461.3079966130. The cubic root of 109438965 is about 478.3260046819.

The spelling of 109438965 in words is "one hundred nine million, four hundred thirty-eight thousand, nine hundred sixty-five".