16989135 has 16 divisors (see below), whose sum is σ = 28613760. Its totient is φ = 8583840.

The previous prime is 16989113. The next prime is 16989143. The reversal of 16989135 is 53198961.

It is not a de Polignac number, because 16989135 - 2⁸ = 16988879 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29521 + ... + 30090.

It is an arithmetic number, because the mean of its divisors is an integer number (1788360).

Almost surely, 2^16989135 is an apocalyptic number.

16989135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16989135 is a deficient number, since it is larger than the sum of its proper divisors (11624625).

16989135 is a wasteful number, since it uses less digits than its factorization.

16989135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59638.

The product of its digits is 58320, while the sum is 42.

The square root of 16989135 is about 4121.7878402460. The cubic root of 16989135 is about 257.0733690104.

The spelling of 16989135 in words is "sixteen million, nine hundred eighty-nine thousand, one hundred thirty-five".