109986978 has 32 divisors (see below), whose sum is σ = 225654336. Its totient is φ = 35725248.

The previous prime is 109986973. The next prime is 109987013. The reversal of 109986978 is 879689901.

It is not an unprimeable number, because it can be changed into a prime (109986973) 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, 48825 + ... + 51027.

It is an arithmetic number, because the mean of its divisors is an integer number (7051698).

Almost surely, 2^109986978 is an apocalyptic number.

109986978 is an abundant number, since it is smaller than the sum of its proper divisors (115667358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109986978 is a wasteful number, since it uses less digits than its factorization.

109986978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418.

The product of its (nonzero) digits is 1959552, while the sum is 57.

The square root of 109986978 is about 10487.4676638357. The cubic root of 109986978 is about 479.1230777270.

The spelling of 109986978 in words is "one hundred nine million, nine hundred eighty-six thousand, nine hundred seventy-eight".