169454309 has 4 divisors (see below), whose sum is σ = 171358380. Its totient is φ = 167550240.

The previous prime is 169454297. The next prime is 169454359. The reversal of 169454309 is 903454961.

169454309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 903454961 = 6551 ⋅137911.

It can be written as a sum of positive squares in 2 ways, for example, as 99062209 + 70392100 = 9953^2 + 8390^2 .

It is a cyclic number.

It is not a de Polignac number, because 169454309 - 2¹⁶ = 169388773 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169454359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 951902 + ... + 952079.

It is an arithmetic number, because the mean of its divisors is an integer number (42839595).

Almost surely, 2^169454309 is an apocalyptic number.

It is an amenable number.

169454309 is a deficient number, since it is larger than the sum of its proper divisors (1904071).

169454309 is an equidigital number, since it uses as much as digits as its factorization.

169454309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904070.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 169454309 is about 13017.4616957378. The cubic root of 169454309 is about 553.3724566699.

The spelling of 169454309 in words is "one hundred sixty-nine million, four hundred fifty-four thousand, three hundred nine".