109564769 has 2 divisors, whose sum is σ = 109564770. Its totient is φ = 109564768.

The previous prime is 109564759. The next prime is 109564771. The reversal of 109564769 is 967465901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54982225 + 54582544 = 7415^2 + 7388^2 .

It is a cyclic number.

It is not a de Polignac number, because 109564769 - 2⁴ = 109564753 is a prime.

It is a super-2 number, since 2×109564769² = 24008877212046722, which contains 22 as substring.

Together with 109564771, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (109564739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54782384 + 54782385.

It is an arithmetic number, because the mean of its divisors is an integer number (54782385).

Almost surely, 2^109564769 is an apocalyptic number.

It is an amenable number.

109564769 is a deficient number, since it is larger than the sum of its proper divisors (1).

109564769 is an equidigital number, since it uses as much as digits as its factorization.

109564769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 109564769 is about 10467.3190932540. The cubic root of 109564769 is about 478.5092187730.

The spelling of 109564769 in words is "one hundred nine million, five hundred sixty-four thousand, seven hundred sixty-nine".