1253404466 has 4 divisors (see below), whose sum is σ = 1880106702. Its totient is φ = 626702232.

The previous prime is 1253404433. The next prime is 1253404469. The reversal of 1253404466 is 6644043521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6644043521 = 29 ⋅229104949.

It can be written as a sum of positive squares in only one way, i.e., 1144807225 + 108597241 = 33835^2 + 10421^2 .

It is not an unprimeable number, because it can be changed into a prime (1253404469) 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, 313351115 + ... + 313351118.

Almost surely, 2^1253404466 is an apocalyptic number.

1253404466 is a deficient number, since it is larger than the sum of its proper divisors (626702236).

1253404466 is an equidigital number, since it uses as much as digits as its factorization.

1253404466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626702235.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 1253404466 is about 35403.4527412229. The cubic root of 1253404466 is about 1078.1944184621.

Adding to 1253404466 its reverse (6644043521), we get a palindrome (7897447987).

The spelling of 1253404466 in words is "one billion, two hundred fifty-three million, four hundred four thousand, four hundred sixty-six".