109839469 has 2 divisors, whose sum is σ = 109839470. Its totient is φ = 109839468.

The previous prime is 109839463. The next prime is 109839481. The reversal of 109839469 is 964938901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108368100 + 1471369 = 10410^2 + 1213^2 .

It is an emirp because it is prime and its reverse (964938901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109839469 - 2⁷ = 109839341 is a prime.

It is a super-2 number, since 2×109839469² = 24129417900403922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109839463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54919734 + 54919735.

It is an arithmetic number, because the mean of its divisors is an integer number (54919735).

Almost surely, 2^109839469 is an apocalyptic number.

It is an amenable number.

109839469 is a deficient number, since it is larger than the sum of its proper divisors (1).

109839469 is an equidigital number, since it uses as much as digits as its factorization.

109839469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 109839469 is about 10480.4326723662. The cubic root of 109839469 is about 478.9087899808.

The spelling of 109839469 in words is "one hundred nine million, eight hundred thirty-nine thousand, four hundred sixty-nine".