109394557 has 2 divisors, whose sum is σ = 109394558. Its totient is φ = 109394556.

The previous prime is 109394531. The next prime is 109394569. The reversal of 109394557 is 755493901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100280196 + 9114361 = 10014^2 + 3019^2 .

It is a cyclic number.

It is not a de Polignac number, because 109394557 - 2⁷ = 109394429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109394357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54697278 + 54697279.

It is an arithmetic number, because the mean of its divisors is an integer number (54697279).

Almost surely, 2^109394557 is an apocalyptic number.

It is an amenable number.

109394557 is a deficient number, since it is larger than the sum of its proper divisors (1).

109394557 is an equidigital number, since it uses as much as digits as its factorization.

109394557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 170100, while the sum is 43.

The square root of 109394557 is about 10459.1852933199. The cubic root of 109394557 is about 478.2612977621.

The spelling of 109394557 in words is "one hundred nine million, three hundred ninety-four thousand, five hundred fifty-seven".