109404661 has 2 divisors, whose sum is σ = 109404662. Its totient is φ = 109404660.

The previous prime is 109404653. The next prime is 109404677. The reversal of 109404661 is 166404901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69639025 + 39765636 = 8345^2 + 6306^2 .

It is a cyclic number.

It is not a de Polignac number, because 109404661 - 2³ = 109404653 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109404461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54702330 + 54702331.

It is an arithmetic number, because the mean of its divisors is an integer number (54702331).

Almost surely, 2^109404661 is an apocalyptic number.

It is an amenable number.

109404661 is a deficient number, since it is larger than the sum of its proper divisors (1).

109404661 is an equidigital number, since it uses as much as digits as its factorization.

109404661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 109404661 is about 10459.6683025802. The cubic root of 109404661 is about 478.2760218444.

The spelling of 109404661 in words is "one hundred nine million, four hundred four thousand, six hundred sixty-one".