165929449 has 4 divisors (see below), whose sum is σ = 189633664. Its totient is φ = 142225236.

The previous prime is 165929399. The next prime is 165929459. The reversal of 165929449 is 944929561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 944929561 = 4139 ⋅228299.

It is a cyclic number.

It is not a de Polignac number, because 165929449 - 2¹⁵ = 165896681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165929459) 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, 11852097 + ... + 11852110.

It is an arithmetic number, because the mean of its divisors is an integer number (47408416).

Almost surely, 2^165929449 is an apocalyptic number.

It is an amenable number.

165929449 is a deficient number, since it is larger than the sum of its proper divisors (23704215).

165929449 is an equidigital number, since it uses as much as digits as its factorization.

165929449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23704214.

The product of its digits is 699840, while the sum is 49.

The square root of 165929449 is about 12881.3605259693. The cubic root of 165929449 is about 549.5085957904.

The spelling of 165929449 in words is "one hundred sixty-five million, nine hundred twenty-nine thousand, four hundred forty-nine".