169449943 has 8 divisors (see below), whose sum is σ = 183649088. Its totient is φ = 155417184.

The previous prime is 169449913. The next prime is 169449953. The reversal of 169449943 is 349944961.

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

It is not a de Polignac number, because 169449943 - 2⁵ = 169449911 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 (169449913) 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, 39471 + ... + 43552.

It is an arithmetic number, because the mean of its divisors is an integer number (22956136).

Almost surely, 2^169449943 is an apocalyptic number.

169449943 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

169449943 is a deficient number, since it is larger than the sum of its proper divisors (14199145).

169449943 is a wasteful number, since it uses less digits than its factorization.

169449943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83193.

The product of its digits is 839808, while the sum is 49.

The square root of 169449943 is about 13017.2939968336. The cubic root of 169449943 is about 553.3677040713.

The spelling of 169449943 in words is "one hundred sixty-nine million, four hundred forty-nine thousand, nine hundred forty-three".