774621449 has 6 divisors (see below), whose sum is σ = 901090314. Its totient is φ = 663961200.

The previous prime is 774621437. The next prime is 774621451. The reversal of 774621449 is 944126477.

It can be written as a sum of positive squares in only one way, i.e., 774620224 + 1225 = 27832^2 + 35^2 .

It is not a de Polignac number, because 774621449 - 2⁴ = 774621433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (774621499) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7904252 + ... + 7904349.

It is an arithmetic number, because the mean of its divisors is an integer number (150181719).

Almost surely, 2^774621449 is an apocalyptic number.

It is an amenable number.

774621449 is a deficient number, since it is larger than the sum of its proper divisors (126468865).

774621449 is a wasteful number, since it uses less digits than its factorization.

774621449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15808615 (or 15808608 counting only the distinct ones).

The product of its digits is 338688, while the sum is 44.

The square root of 774621449 is about 27832.0220070336. The cubic root of 774621449 is about 918.3956952815.

The spelling of 774621449 in words is "seven hundred seventy-four million, six hundred twenty-one thousand, four hundred forty-nine".