274369993 has 2 divisors, whose sum is σ = 274369994. Its totient is φ = 274369992.

The previous prime is 274369961. The next prime is 274370023. The reversal of 274369993 is 399963472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 267257104 + 7112889 = 16348^2 + 2667^2 .

It is a cyclic number.

It is not a de Polignac number, because 274369993 - 2⁵ = 274369961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 274369993.

It is not a weakly prime, because it can be changed into another prime (274369943) 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 as a sum of consecutive naturals, namely, 137184996 + 137184997.

It is an arithmetic number, because the mean of its divisors is an integer number (137184997).

Almost surely, 2^274369993 is an apocalyptic number.

It is an amenable number.

274369993 is a deficient number, since it is larger than the sum of its proper divisors (1).

274369993 is an equidigital number, since it uses as much as digits as its factorization.

274369993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2204496, while the sum is 52.

The square root of 274369993 is about 16564.1176342116. The cubic root of 274369993 is about 649.7987487409.

The spelling of 274369993 in words is "two hundred seventy-four million, three hundred sixty-nine thousand, nine hundred ninety-three".