109609469 has 2 divisors, whose sum is σ = 109609470. Its totient is φ = 109609468.

The previous prime is 109609457. The next prime is 109609481. The reversal of 109609469 is 964906901.

It is a balanced prime because it is at equal distance from previous prime (109609457) and next prime (109609481).

It can be written as a sum of positive squares in only one way, i.e., 109453444 + 156025 = 10462^2 + 395^2 .

It is a cyclic number.

It is not a de Polignac number, because 109609469 - 2²⁴ = 92832253 is a prime.

It is a super-2 number, since 2×109609469² = 24028471388923922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109609169) 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, 54804734 + 54804735.

It is an arithmetic number, because the mean of its divisors is an integer number (54804735).

Almost surely, 2^109609469 is an apocalyptic number.

It is an amenable number.

109609469 is a deficient number, since it is larger than the sum of its proper divisors (1).

109609469 is an equidigital number, since it uses as much as digits as its factorization.

109609469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 109609469 is about 10469.4540927405. The cubic root of 109609469 is about 478.5742836478.

The spelling of 109609469 in words is "one hundred nine million, six hundred nine thousand, four hundred sixty-nine".