63394491 has 8 divisors (see below), whose sum is σ = 84738384. Its totient is φ = 42156800.

The previous prime is 63394477. The next prime is 63394501. The reversal of 63394491 is 19449336.

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

It is a cyclic number.

It is not a de Polignac number, because 63394491 - 2¹⁰ = 63393467 is a prime.

It is a super-2 number, since 2×63394491² = 8037722978298162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63394451) 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, 25146 + ... + 27551.

It is an arithmetic number, because the mean of its divisors is an integer number (10592298).

Almost surely, 2^63394491 is an apocalyptic number.

63394491 is a deficient number, since it is larger than the sum of its proper divisors (21343893).

63394491 is a wasteful number, since it uses less digits than its factorization.

63394491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53101.

The product of its digits is 69984, while the sum is 39.

The square root of 63394491 is about 7962.0657495401. The cubic root of 63394491 is about 398.7345235622.

The spelling of 63394491 in words is "sixty-three million, three hundred ninety-four thousand, four hundred ninety-one".