109629989 has 16 divisors (see below), whose sum is σ = 126959616. Its totient is φ = 92727600.

The previous prime is 109629979. The next prime is 109630009. The reversal of 109629989 is 989926901.

It is not a de Polignac number, because 109629989 - 2⁴ = 109629973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109629989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109629979) 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, 223034 + ... + 223524.

It is an arithmetic number, because the mean of its divisors is an integer number (7934976).

Almost surely, 2^109629989 is an apocalyptic number.

It is an amenable number.

109629989 is a deficient number, since it is larger than the sum of its proper divisors (17329627).

109629989 is a wasteful number, since it uses less digits than its factorization.

109629989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856.

The product of its (nonzero) digits is 629856, while the sum is 53.

The square root of 109629989 is about 10470.4340406690. The cubic root of 109629989 is about 478.6041464313.

The spelling of 109629989 in words is "one hundred nine million, six hundred twenty-nine thousand, nine hundred eighty-nine".