109597949 has 2 divisors, whose sum is σ = 109597950. Its totient is φ = 109597948.

The previous prime is 109597933. The next prime is 109597951. The reversal of 109597949 is 949795901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88021924 + 21576025 = 9382^2 + 4645^2 .

It is a cyclic number.

It is not a de Polignac number, because 109597949 - 2⁴ = 109597933 is a prime.

Together with 109597951, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109597949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109597919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54798974 + 54798975.

It is an arithmetic number, because the mean of its divisors is an integer number (54798975).

Almost surely, 2^109597949 is an apocalyptic number.

It is an amenable number.

109597949 is a deficient number, since it is larger than the sum of its proper divisors (1).

109597949 is an equidigital number, since it uses as much as digits as its factorization.

109597949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 918540, while the sum is 53.

The square root of 109597949 is about 10468.9039063314. The cubic root of 109597949 is about 478.5575169428.

It can be divided in two parts, 10 and 9597949, that added together give a palindrome (9597959).

The spelling of 109597949 in words is "one hundred nine million, five hundred ninety-seven thousand, nine hundred forty-nine".