169098949 has 8 divisors (see below), whose sum is σ = 179442648. Its totient is φ = 158799360.

The previous prime is 169098931. The next prime is 169098959. The reversal of 169098949 is 949890961.

It can be written as a sum of positive squares in 4 ways, for example, as 60730849 + 108368100 = 7793^2 + 10410^2 .

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 169098949 - 2⁹ = 169098437 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 169098949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169098929) 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, 2952 + ... + 18625.

It is an arithmetic number, because the mean of its divisors is an integer number (22430331).

Almost surely, 2^169098949 is an apocalyptic number.

It is an amenable number.

169098949 is a deficient number, since it is larger than the sum of its proper divisors (10343699).

169098949 is a wasteful number, since it uses less digits than its factorization.

169098949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22055.

The product of its (nonzero) digits is 1259712, while the sum is 55.

The square root of 169098949 is about 13003.8051738712. The cubic root of 169098949 is about 552.9853630257.

The spelling of 169098949 in words is "one hundred sixty-nine million, ninety-eight thousand, nine hundred forty-nine".