109478787 has 16 divisors (see below), whose sum is σ = 160226688. Its totient is φ = 65940480.

The previous prime is 109478777. The next prime is 109478791. The reversal of 109478787 is 787874901.

It is not a de Polignac number, because 109478787 - 2¹² = 109474691 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (109478777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4798 + ... + 15555.

It is an arithmetic number, because the mean of its divisors is an integer number (10014168).

Almost surely, 2^109478787 is an apocalyptic number.

109478787 is a deficient number, since it is larger than the sum of its proper divisors (50747901).

109478787 is a wasteful number, since it uses less digits than its factorization.

109478787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20530.

The product of its (nonzero) digits is 790272, while the sum is 51.

The square root of 109478787 is about 10463.2111227864. The cubic root of 109478787 is about 478.3840144540.

The spelling of 109478787 in words is "one hundred nine million, four hundred seventy-eight thousand, seven hundred eighty-seven".