109997149 has 2 divisors, whose sum is σ = 109997150. Its totient is φ = 109997148.

The previous prime is 109997131. The next prime is 109997221. The reversal of 109997149 is 941799901.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109056249 + 940900 = 10443^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 109997149 - 2⁹ = 109996637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109997119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54998574 + 54998575.

It is an arithmetic number, because the mean of its divisors is an integer number (54998575).

Almost surely, 2^109997149 is an apocalyptic number.

It is an amenable number.

109997149 is a deficient number, since it is larger than the sum of its proper divisors (1).

109997149 is an equidigital number, since it uses as much as digits as its factorization.

109997149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 49.

The square root of 109997149 is about 10487.9525647287. The cubic root of 109997149 is about 479.1378461741.

The spelling of 109997149 in words is "one hundred nine million, nine hundred ninety-seven thousand, one hundred forty-nine".