272816993 has 4 divisors (see below), whose sum is σ = 279471108. Its totient is φ = 266162880.

The previous prime is 272816959. The next prime is 272817031. The reversal of 272816993 is 399618272.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 114233344 + 158583649 = 10688^2 + 12593^2 .

It is a cyclic number.

It is not a de Polignac number, because 272816993 - 2⁸ = 272816737 is a prime.

It is a super-2 number, since 2×272816993² = 148858223339124098, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (272816903) 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, 3326996 + ... + 3327077.

It is an arithmetic number, because the mean of its divisors is an integer number (69867777).

Almost surely, 2^272816993 is an apocalyptic number.

It is an amenable number.

272816993 is a deficient number, since it is larger than the sum of its proper divisors (6654115).

272816993 is an equidigital number, since it uses as much as digits as its factorization.

272816993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6654114.

The product of its digits is 326592, while the sum is 47.

The square root of 272816993 is about 16517.1726696793. The cubic root of 272816993 is about 648.5704226615.

The spelling of 272816993 in words is "two hundred seventy-two million, eight hundred sixteen thousand, nine hundred ninety-three".