774297149 has 2 divisors, whose sum is σ = 774297150. Its totient is φ = 774297148.

The previous prime is 774297133. The next prime is 774297151. The reversal of 774297149 is 941792477.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 732784900 + 41512249 = 27070^2 + 6443^2 .

It is a cyclic number.

It is not a de Polignac number, because 774297149 - 2⁴ = 774297133 is a prime.

Together with 774297151, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 774297097 and 774297106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (774297169) 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 as a sum of consecutive naturals, namely, 387148574 + 387148575.

It is an arithmetic number, because the mean of its divisors is an integer number (387148575).

Almost surely, 2^774297149 is an apocalyptic number.

It is an amenable number.

774297149 is a deficient number, since it is larger than the sum of its proper divisors (1).

774297149 is an equidigital number, since it uses as much as digits as its factorization.

774297149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 889056, while the sum is 50.

The square root of 774297149 is about 27826.1953741434. The cubic root of 774297149 is about 918.2675134030.

The spelling of 774297149 in words is "seven hundred seventy-four million, two hundred ninety-seven thousand, one hundred forty-nine".