109639349 has 2 divisors, whose sum is σ = 109639350. Its totient is φ = 109639348.

The previous prime is 109639339. The next prime is 109639363. The reversal of 109639349 is 943936901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96628900 + 13010449 = 9830^2 + 3607^2 .

It is a cyclic number.

It is not a de Polignac number, because 109639349 - 2⁴ = 109639333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109639339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54819674 + 54819675.

It is an arithmetic number, because the mean of its divisors is an integer number (54819675).

Almost surely, 2^109639349 is an apocalyptic number.

It is an amenable number.

109639349 is a deficient number, since it is larger than the sum of its proper divisors (1).

109639349 is an equidigital number, since it uses as much as digits as its factorization.

109639349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 109639349 is about 10470.8810040034. The cubic root of 109639349 is about 478.6177668144.

The spelling of 109639349 in words is "one hundred nine million, six hundred thirty-nine thousand, three hundred forty-nine".