63957939 has 8 divisors (see below), whose sum is σ = 85322640. Its totient is φ = 42615936.

The previous prime is 63957911. The next prime is 63957967. The reversal of 63957939 is 93975936.

It is an interprime number because it is at equal distance from previous prime (63957911) and next prime (63957967).

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

It is not a de Polignac number, because 63957939 - 2⁸ = 63957683 is a prime.

It is a super-3 number, since 3×63957939³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 63957891 and 63957900.

It is not an unprimeable number, because it can be changed into a prime (63957989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2647 + ... + 11615.

It is an arithmetic number, because the mean of its divisors is an integer number (10665330).

Almost surely, 2^63957939 is an apocalyptic number.

63957939 is a deficient number, since it is larger than the sum of its proper divisors (21364701).

63957939 is a wasteful number, since it uses less digits than its factorization.

63957939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11349.

The product of its digits is 1377810, while the sum is 51.

The square root of 63957939 is about 7997.3707554421. The cubic root of 63957939 is about 399.9123537134.

The spelling of 63957939 in words is "sixty-three million, nine hundred fifty-seven thousand, nine hundred thirty-nine".