165429959 has 4 divisors (see below), whose sum is σ = 165703104. Its totient is φ = 165156816.

The previous prime is 165429947. The next prime is 165429973. The reversal of 165429959 is 959924561.

165429959 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.

It is a cyclic number.

It is not a de Polignac number, because 165429959 - 2¹² = 165425863 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 (165429259) 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, 135662 + ... + 136875.

It is an arithmetic number, because the mean of its divisors is an integer number (41425776).

Almost surely, 2^165429959 is an apocalyptic number.

165429959 is a deficient number, since it is larger than the sum of its proper divisors (273145).

165429959 is an equidigital number, since it uses as much as digits as its factorization.

165429959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273144.

The product of its digits is 874800, while the sum is 50.

The square root of 165429959 is about 12861.9578214205. The cubic root of 165429959 is about 548.9566545407.

It can be divided in two parts, 1654 and 29959, that added together give a palindrome (31613).

The spelling of 165429959 in words is "one hundred sixty-five million, four hundred twenty-nine thousand, nine hundred fifty-nine".