169740393 has 48 divisors (see below), whose sum is σ = 256111680. Its totient is φ = 99800064.

The previous prime is 169740383. The next prime is 169740449. The reversal of 169740393 is 393047961.

It is not a de Polignac number, because 169740393 - 2¹³ = 169732201 is a prime.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (169740383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1081071 + ... + 1081227.

It is an arithmetic number, because the mean of its divisors is an integer number (5335660).

Almost surely, 2^169740393 is an apocalyptic number.

It is an amenable number.

169740393 is a deficient number, since it is larger than the sum of its proper divisors (86371287).

169740393 is a wasteful number, since it uses less digits than its factorization.

169740393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 169740393 is about 13028.4455327564. The cubic root of 169740393 is about 553.6836949419.

The spelling of 169740393 in words is "one hundred sixty-nine million, seven hundred forty thousand, three hundred ninety-three".