109937609 has 2 divisors, whose sum is σ = 109937610. Its totient is φ = 109937608.

The previous prime is 109937561. The next prime is 109937651. The reversal of 109937609 is 906739901.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109265209 + 672400 = 10453^2 + 820^2 .

It is a cyclic number.

It is not a de Polignac number, because 109937609 - 2¹² = 109933513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109937609.

It is not a weakly prime, because it can be changed into another prime (109937669) 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 as a sum of consecutive naturals, namely, 54968804 + 54968805.

It is an arithmetic number, because the mean of its divisors is an integer number (54968805).

Almost surely, 2^109937609 is an apocalyptic number.

It is an amenable number.

109937609 is a deficient number, since it is larger than the sum of its proper divisors (1).

109937609 is an equidigital number, since it uses as much as digits as its factorization.

109937609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 109937609 is about 10485.1136856021. The cubic root of 109937609 is about 479.0513802478.

The spelling of 109937609 in words is "one hundred nine million, nine hundred thirty-seven thousand, six hundred nine".