63393445 has 4 divisors (see below), whose sum is σ = 76072140. Its totient is φ = 50714752.

The previous prime is 63393439. The next prime is 63393461. The reversal of 63393445 is 54439336.

63393445 is nontrivially palindromic in base 6.

It is a Cunningham number, because it is equal to 7962²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22829284 + 40564161 = 4778^2 + 6369^2 .

It is a cyclic number.

It is not a de Polignac number, because 63393445 - 2⁵ = 63393413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6339340 + ... + 6339349.

It is an arithmetic number, because the mean of its divisors is an integer number (19018035).

Almost surely, 2^63393445 is an apocalyptic number.

It is an amenable number.

63393445 is a deficient number, since it is larger than the sum of its proper divisors (12678695).

63393445 is a wasteful number, since it uses less digits than its factorization.

63393445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12678694.

The product of its digits is 116640, while the sum is 37.

The square root of 63393445 is about 7962.0000627983. Note that the first 4 decimals coincide. The cubic root of 63393445 is about 398.7323305293.

The spelling of 63393445 in words is "sixty-three million, three hundred ninety-three thousand, four hundred forty-five".