169280989 has 8 divisors (see below), whose sum is σ = 176780160. Its totient is φ = 161793456.

The previous prime is 169280983. The next prime is 169281001. The reversal of 169280989 is 989082961.

169280989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 169280989 - 2⁹ = 169280477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169280983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41259 + ... + 45175.

It is an arithmetic number, because the mean of its divisors is an integer number (22097520).

Almost surely, 2^169280989 is an apocalyptic number.

It is an amenable number.

169280989 is a deficient number, since it is larger than the sum of its proper divisors (7499171).

169280989 is a wasteful number, since it uses less digits than its factorization.

169280989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5819.

The product of its (nonzero) digits is 559872, while the sum is 52.

The square root of 169280989 is about 13010.8027807665. The cubic root of 169280989 is about 553.1837268723.

The spelling of 169280989 in words is "one hundred sixty-nine million, two hundred eighty thousand, nine hundred eighty-nine".