272169985 has 4 divisors (see below), whose sum is σ = 326603988. Its totient is φ = 217735984.

The previous prime is 272169979. The next prime is 272169991. The reversal of 272169985 is 589961272.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (272169979) and next prime (272169991).

It can be written as a sum of positive squares in 2 ways, for example, as 49056016 + 223113969 = 7004^2 + 14937^2 .

It is a cyclic number.

It is not a de Polignac number, because 272169985 - 2³ = 272169977 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 27216994 + ... + 27217003.

It is an arithmetic number, because the mean of its divisors is an integer number (81650997).

Almost surely, 2^272169985 is an apocalyptic number.

It is an amenable number.

272169985 is a deficient number, since it is larger than the sum of its proper divisors (54434003).

272169985 is an equidigital number, since it uses as much as digits as its factorization.

272169985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54434002.

The product of its digits is 544320, while the sum is 49.

The square root of 272169985 is about 16497.5751248479. The cubic root of 272169985 is about 648.0573040633.

The spelling of 272169985 in words is "two hundred seventy-two million, one hundred sixty-nine thousand, nine hundred eighty-five".