274886993 has 4 divisors (see below), whose sum is σ = 275066688. Its totient is φ = 274707300.

The previous prime is 274886987. The next prime is 274886999. The reversal of 274886993 is 399688472.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (274886987) and next prime (274886999).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-274886993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (274886999) by changing a digit.

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, 87533 + ... + 90618.

It is an arithmetic number, because the mean of its divisors is an integer number (68766672).

Almost surely, 2^274886993 is an apocalyptic number.

It is an amenable number.

274886993 is a deficient number, since it is larger than the sum of its proper divisors (179695).

274886993 is a wasteful number, since it uses less digits than its factorization.

274886993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179694.

The product of its digits is 5225472, while the sum is 56.

The square root of 274886993 is about 16579.7163124102. The cubic root of 274886993 is about 650.2066348956.

The spelling of 274886993 in words is "two hundred seventy-four million, eight hundred eighty-six thousand, nine hundred ninety-three".