693774449 has 2 divisors, whose sum is σ = 693774450. Its totient is φ = 693774448.

The previous prime is 693774443. The next prime is 693774463. The reversal of 693774449 is 944477396.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 381616225 + 312158224 = 19535^2 + 17668^2 .

It is a cyclic number.

It is not a de Polignac number, because 693774449 - 2²⁸ = 425338993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 693774449.

It is not a weakly prime, because it can be changed into another prime (693774443) 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, 346887224 + 346887225.

It is an arithmetic number, because the mean of its divisors is an integer number (346887225).

Almost surely, 2^693774449 is an apocalyptic number.

It is an amenable number.

693774449 is a deficient number, since it is larger than the sum of its proper divisors (1).

693774449 is an equidigital number, since it uses as much as digits as its factorization.

693774449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 53.

The square root of 693774449 is about 26339.5984973196. The cubic root of 693774449 is about 885.2639254549.

The spelling of 693774449 in words is "six hundred ninety-three million, seven hundred seventy-four thousand, four hundred forty-nine".