109989457 has 8 divisors (see below), whose sum is σ = 114294272. Its totient is φ = 105732000.

The previous prime is 109989413. The next prime is 109989463. The reversal of 109989457 is 754989901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109989457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109989487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7068 + ... + 16429.

It is an arithmetic number, because the mean of its divisors is an integer number (14286784).

Almost surely, 2^109989457 is an apocalyptic number.

It is an amenable number.

109989457 is a deficient number, since it is larger than the sum of its proper divisors (4304815).

109989457 is a wasteful number, since it uses less digits than its factorization.

109989457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23679.

The product of its (nonzero) digits is 816480, while the sum is 52.

The square root of 109989457 is about 10487.5858518536. The cubic root of 109989457 is about 479.1266773567.

The spelling of 109989457 in words is "one hundred nine million, nine hundred eighty-nine thousand, four hundred fifty-seven".