109449521 has 2 divisors, whose sum is σ = 109449522. Its totient is φ = 109449520.

The previous prime is 109449517. The next prime is 109449533. The reversal of 109449521 is 125944901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74580496 + 34869025 = 8636^2 + 5905^2 .

It is a cyclic number.

It is not a de Polignac number, because 109449521 - 2² = 109449517 is a prime.

It is a super-3 number, since 3×109449521³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (109449421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54724760 + 54724761.

It is an arithmetic number, because the mean of its divisors is an integer number (54724761).

Almost surely, 2^109449521 is an apocalyptic number.

It is an amenable number.

109449521 is a deficient number, since it is larger than the sum of its proper divisors (1).

109449521 is an equidigital number, since it uses as much as digits as its factorization.

109449521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 109449521 is about 10461.8125102680. The cubic root of 109449521 is about 478.3413832598.

The spelling of 109449521 in words is "one hundred nine million, four hundred forty-nine thousand, five hundred twenty-one".