453984661 has 4 divisors (see below), whose sum is σ = 488906572. Its totient is φ = 419062752.

The previous prime is 453984659. The next prime is 453984679. The reversal of 453984661 is 166489354.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 148084561 + 305900100 = 12169^2 + 17490^2 .

It is a cyclic number.

It is not a de Polignac number, because 453984661 - 2¹ = 453984659 is a prime.

It is a super-2 number, since 2×453984661² = 412204144846569842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (453984761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17460936 + ... + 17460961.

It is an arithmetic number, because the mean of its divisors is an integer number (122226643).

Almost surely, 2^453984661 is an apocalyptic number.

It is an amenable number.

453984661 is a deficient number, since it is larger than the sum of its proper divisors (34921911).

453984661 is a wasteful number, since it uses less digits than its factorization.

453984661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34921910.

The product of its digits is 622080, while the sum is 46.

The square root of 453984661 is about 21306.9158021521. The cubic root of 453984661 is about 768.5646284838.

The spelling of 453984661 in words is "four hundred fifty-three million, nine hundred eighty-four thousand, six hundred sixty-one".