275988397 has 4 divisors (see below), whose sum is σ = 278668000. Its totient is φ = 273308796.

The previous prime is 275988373. The next prime is 275988403. The reversal of 275988397 is 793889572.

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.

It is a cyclic number.

It is not a de Polignac number, because 275988397 - 2⁷ = 275988269 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 (275988337) 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, 1339647 + ... + 1339852.

It is an arithmetic number, because the mean of its divisors is an integer number (69667000).

Almost surely, 2^275988397 is an apocalyptic number.

It is an amenable number.

275988397 is a deficient number, since it is larger than the sum of its proper divisors (2679603).

275988397 is a wasteful number, since it uses less digits than its factorization.

275988397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2679602.

The product of its digits is 7620480, while the sum is 58.

The square root of 275988397 is about 16612.8985129026. The cubic root of 275988397 is about 651.0738832130.

The spelling of 275988397 in words is "two hundred seventy-five million, nine hundred eighty-eight thousand, three hundred ninety-seven".