109132987 has 2 divisors, whose sum is σ = 109132988. Its totient is φ = 109132986.

The previous prime is 109132973. The next prime is 109133009. The reversal of 109132987 is 789231901.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109132987 is a prime.

It is not a weakly prime, because it can be changed into another prime (109132187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54566493 + 54566494.

It is an arithmetic number, because the mean of its divisors is an integer number (54566494).

Almost surely, 2^109132987 is an apocalyptic number.

109132987 is a deficient number, since it is larger than the sum of its proper divisors (1).

109132987 is an equidigital number, since it uses as much as digits as its factorization.

109132987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 109132987 is about 10446.6734896808. The cubic root of 109132987 is about 477.8798081938.

The spelling of 109132987 in words is "one hundred nine million, one hundred thirty-two thousand, nine hundred eighty-seven".