63453946 has 4 divisors (see below), whose sum is σ = 95180922. Its totient is φ = 31726972.

The previous prime is 63453919. The next prime is 63453947. The reversal of 63453946 is 64935436.

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

It can be written as a sum of positive squares in only one way, i.e., 38303721 + 25150225 = 6189^2 + 5015^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 63453899 and 63453908.

It is not an unprimeable number, because it can be changed into a prime (63453947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15863485 + ... + 15863488.

Almost surely, 2^63453946 is an apocalyptic number.

63453946 is a deficient number, since it is larger than the sum of its proper divisors (31726976).

63453946 is a wasteful number, since it uses less digits than its factorization.

63453946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31726975.

The product of its digits is 233280, while the sum is 40.

The square root of 63453946 is about 7965.7985161564. The cubic root of 63453946 is about 398.8591366707.

The spelling of 63453946 in words is "sixty-three million, four hundred fifty-three thousand, nine hundred forty-six".