63491443 has 8 divisors (see below), whose sum is σ = 64365840. Its totient is φ = 62620800.

The previous prime is 63491429. The next prime is 63491453. The reversal of 63491443 is 34419436.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63491443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63491399 and 63491408.

It is not an unprimeable number, because it can be changed into a prime (63491453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52896 + ... + 54082.

It is an arithmetic number, because the mean of its divisors is an integer number (8045730).

Almost surely, 2^63491443 is an apocalyptic number.

63491443 is a deficient number, since it is larger than the sum of its proper divisors (874397).

63491443 is a wasteful number, since it uses less digits than its factorization.

63491443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1877.

The product of its digits is 31104, while the sum is 34.

The square root of 63491443 is about 7968.1517932329. The cubic root of 63491443 is about 398.9376874778.

The spelling of 63491443 in words is "sixty-three million, four hundred ninety-one thousand, four hundred forty-three".