111344669 has 2 divisors, whose sum is σ = 111344670. Its totient is φ = 111344668.

The previous prime is 111344657. The next prime is 111344677. The reversal of 111344669 is 966443111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104816644 + 6528025 = 10238^2 + 2555^2 .

It is an emirp because it is prime and its reverse (966443111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111344669 - 2⁸ = 111344413 is a prime.

It is a super-2 number, since 2×111344669² = 24795270629439122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111314669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55672334 + 55672335.

It is an arithmetic number, because the mean of its divisors is an integer number (55672335).

Almost surely, 2^111344669 is an apocalyptic number.

It is an amenable number.

111344669 is a deficient number, since it is larger than the sum of its proper divisors (1).

111344669 is an equidigital number, since it uses as much as digits as its factorization.

111344669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 35.

The square root of 111344669 is about 10551.9983415465. The cubic root of 111344669 is about 481.0864697882.

Adding to 111344669 its sum of digits (35), we get a square (111344704 = 10552²).

The spelling of 111344669 in words is "one hundred eleven million, three hundred forty-four thousand, six hundred sixty-nine".