165470447 has 4 divisors (see below), whose sum is σ = 166461456. Its totient is φ = 164479440.

The previous prime is 165470443. The next prime is 165470453. The reversal of 165470447 is 744074561.

It is a happy number.

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 165470447 - 2² = 165470443 is a prime.

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 165470447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165470443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495254 + ... + 495587.

It is an arithmetic number, because the mean of its divisors is an integer number (41615364).

Almost surely, 2^165470447 is an apocalyptic number.

165470447 is a deficient number, since it is larger than the sum of its proper divisors (991009).

165470447 is an equidigital number, since it uses as much as digits as its factorization.

165470447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991008.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 165470447 is about 12863.5316690246. The cubic root of 165470447 is about 549.0014355146.

The spelling of 165470447 in words is "one hundred sixty-five million, four hundred seventy thousand, four hundred forty-seven".