109970621 has 4 divisors (see below), whose sum is σ = 110020092. Its totient is φ = 109921152.

The previous prime is 109970611. The next prime is 109970629. The reversal of 109970621 is 126079901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11464996 + 98505625 = 3386^2 + 9925^2 .

It is a cyclic number.

It is not a de Polignac number, because 109970621 - 2¹⁰ = 109969597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109970629) 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 3 ways as a sum of consecutive naturals, for example, 21236 + ... + 25901.

It is an arithmetic number, because the mean of its divisors is an integer number (27505023).

Almost surely, 2^109970621 is an apocalyptic number.

It is an amenable number.

109970621 is a deficient number, since it is larger than the sum of its proper divisors (49471).

109970621 is an equidigital number, since it uses as much as digits as its factorization.

109970621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49470.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 109970621 is about 10486.6877993006. The cubic root of 109970621 is about 479.0993252039.

The spelling of 109970621 in words is "one hundred nine million, nine hundred seventy thousand, six hundred twenty-one".