83149109 has 2 divisors, whose sum is σ = 83149110. Its totient is φ = 83149108.

The previous prime is 83149043. The next prime is 83149123. The reversal of 83149109 is 90194138.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80156209 + 2992900 = 8953^2 + 1730^2 .

It is a cyclic number.

It is not a de Polignac number, because 83149109 - 2²⁰ = 82100533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83149609) 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, 41574554 + 41574555.

It is an arithmetic number, because the mean of its divisors is an integer number (41574555).

Almost surely, 2^83149109 is an apocalyptic number.

It is an amenable number.

83149109 is a deficient number, since it is larger than the sum of its proper divisors (1).

83149109 is an equidigital number, since it uses as much as digits as its factorization.

83149109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 83149109 is about 9118.6133265974. The cubic root of 83149109 is about 436.4681253341.

The spelling of 83149109 in words is "eighty-three million, one hundred forty-nine thousand, one hundred nine".