273894997 has 4 divisors (see below), whose sum is σ = 273928780. Its totient is φ = 273861216.

The previous prime is 273894989. The next prime is 273895003. The reversal of 273894997 is 799498372.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 179533201 + 94361796 = 13399^2 + 9714^2 .

It is a 3-Lehmer number, since φ(273894997) divides (273894997-1)³.

It is a cyclic number.

It is not a de Polignac number, because 273894997 - 2³ = 273894989 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 (273894917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3379 + ... + 23647.

It is an arithmetic number, because the mean of its divisors is an integer number (68482195).

Almost surely, 2^273894997 is an apocalyptic number.

273894997 is the 13513-rd pentagonal number.

It is an amenable number.

273894997 is a deficient number, since it is larger than the sum of its proper divisors (33783).

273894997 is a wasteful number, since it uses less digits than its factorization.

273894997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33782.

The product of its digits is 6858432, while the sum is 58.

The square root of 273894997 is about 16549.7733217105. The cubic root of 273894997 is about 649.4235496776.

The spelling of 273894997 in words is "two hundred seventy-three million, eight hundred ninety-four thousand, nine hundred ninety-seven".