109289129 has 2 divisors, whose sum is σ = 109289130. Its totient is φ = 109289128.

The previous prime is 109289041. The next prime is 109289179. The reversal of 109289129 is 921982901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107599129 + 1690000 = 10373^2 + 1300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109289129 is a prime.

It is a super-2 number, since 2×109289129² = 23888227435157282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (109289179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54644564 + 54644565.

It is an arithmetic number, because the mean of its divisors is an integer number (54644565).

Almost surely, 2^109289129 is an apocalyptic number.

It is an amenable number.

109289129 is a deficient number, since it is larger than the sum of its proper divisors (1).

109289129 is an equidigital number, since it uses as much as digits as its factorization.

109289129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 109289129 is about 10454.1441065254. The cubic root of 109289129 is about 478.1076084010.

The spelling of 109289129 in words is "one hundred nine million, two hundred eighty-nine thousand, one hundred twenty-nine".