446868649 has 2 divisors, whose sum is σ = 446868650. Its totient is φ = 446868648.

The previous prime is 446868601. The next prime is 446868659. The reversal of 446868649 is 946868644.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 375584400 + 71284249 = 19380^2 + 8443^2 .

It is a cyclic number.

It is not a de Polignac number, because 446868649 - 2¹¹ = 446866601 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 446868649.

It is not a weakly prime, because it can be changed into another prime (446868659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223434324 + 223434325.

It is an arithmetic number, because the mean of its divisors is an integer number (223434325).

Almost surely, 2^446868649 is an apocalyptic number.

It is an amenable number.

446868649 is a deficient number, since it is larger than the sum of its proper divisors (1).

446868649 is an equidigital number, since it uses as much as digits as its factorization.

446868649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7962624, while the sum is 55.

The square root of 446868649 is about 21139.2679390749. The cubic root of 446868649 is about 764.5278240191.

It can be divided in two parts, 44686 and 8649, that added together give a palindrome (53335).

The spelling of 446868649 in words is "four hundred forty-six million, eight hundred sixty-eight thousand, six hundred forty-nine".