63394393 has 4 divisors (see below), whose sum is σ = 66730960. Its totient is φ = 60057828.

The previous prime is 63394381. The next prime is 63394439. The reversal of 63394393 is 39349336.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63394393 - 2²¹ = 61297241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63394333) 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, 1668255 + ... + 1668292.

It is an arithmetic number, because the mean of its divisors is an integer number (16682740).

Almost surely, 2^63394393 is an apocalyptic number.

It is an amenable number.

63394393 is a deficient number, since it is larger than the sum of its proper divisors (3336567).

63394393 is a wasteful number, since it uses less digits than its factorization.

63394393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336566.

The product of its digits is 157464, while the sum is 40.

The square root of 63394393 is about 7962.0595953560. The cubic root of 63394393 is about 398.7343180974.

The spelling of 63394393 in words is "sixty-three million, three hundred ninety-four thousand, three hundred ninety-three".