109839049 has 2 divisors, whose sum is σ = 109839050. Its totient is φ = 109839048.

The previous prime is 109839043. The next prime is 109839077. The reversal of 109839049 is 940938901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109830400 + 8649 = 10480^2 + 93^2 .

It is a cyclic number.

It is not a de Polignac number, because 109839049 - 2²¹ = 107741897 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 109838996 and 109839014.

It is not a weakly prime, because it can be changed into another prime (109839043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54919524 + 54919525.

It is an arithmetic number, because the mean of its divisors is an integer number (54919525).

Almost surely, 2^109839049 is an apocalyptic number.

It is an amenable number.

109839049 is a deficient number, since it is larger than the sum of its proper divisors (1).

109839049 is an equidigital number, since it uses as much as digits as its factorization.

109839049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 109839049 is about 10480.4126350063. The cubic root of 109839049 is about 478.9081795690.

The spelling of 109839049 in words is "one hundred nine million, eight hundred thirty-nine thousand, forty-nine".