109440869 has 2 divisors, whose sum is σ = 109440870. Its totient is φ = 109440868.

The previous prime is 109440829. The next prime is 109440901. The reversal of 109440869 is 968044901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107848225 + 1592644 = 10385^2 + 1262^2 .

It is a cyclic number.

It is not a de Polignac number, because 109440869 - 2²⁴ = 92663653 is a prime.

It is a super-2 number, since 2×109440869² = 23954607614950322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109440829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54720434 + 54720435.

It is an arithmetic number, because the mean of its divisors is an integer number (54720435).

Almost surely, 2^109440869 is an apocalyptic number.

It is an amenable number.

109440869 is a deficient number, since it is larger than the sum of its proper divisors (1).

109440869 is an equidigital number, since it uses as much as digits as its factorization.

109440869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 109440869 is about 10461.3989982220. The cubic root of 109440869 is about 478.3287786099.

The spelling of 109440869 in words is "one hundred nine million, four hundred forty thousand, eight hundred sixty-nine".