109409273 has 2 divisors, whose sum is σ = 109409274. Its totient is φ = 109409272.

The previous prime is 109409249. The next prime is 109409303. The reversal of 109409273 is 372904901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90859024 + 18550249 = 9532^2 + 4307^2 .

It is a cyclic number.

It is not a de Polignac number, because 109409273 - 2⁸ = 109409017 is a prime.

It is not a weakly prime, because it can be changed into another prime (109409203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54704636 + 54704637.

It is an arithmetic number, because the mean of its divisors is an integer number (54704637).

Almost surely, 2^109409273 is an apocalyptic number.

It is an amenable number.

109409273 is a deficient number, since it is larger than the sum of its proper divisors (1).

109409273 is an equidigital number, since it uses as much as digits as its factorization.

109409273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 109409273 is about 10459.8887661390. Note that the first 3 decimals coincide. The cubic root of 109409273 is about 478.2827423930.

The spelling of 109409273 in words is "one hundred nine million, four hundred nine thousand, two hundred seventy-three".