453431906 has 4 divisors (see below), whose sum is σ = 680147862. Its totient is φ = 226715952.

The previous prime is 453431897. The next prime is 453431963. The reversal of 453431906 is 609134354.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 609134354 = 2 ⋅304567177.

It can be written as a sum of positive squares in only one way, i.e., 228281881 + 225150025 = 15109^2 + 15005^2 .

It is an unprimeable number.

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, 113357975 + ... + 113357978.

Almost surely, 2^453431906 is an apocalyptic number.

453431906 is a deficient number, since it is larger than the sum of its proper divisors (226715956).

453431906 is a wasteful number, since it uses less digits than its factorization.

453431906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226715955.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 453431906 is about 21293.9405935116. The cubic root of 453431906 is about 768.2525764751.

The spelling of 453431906 in words is "four hundred fifty-three million, four hundred thirty-one thousand, nine hundred six".