63893940 has 96 divisors (see below), whose sum is σ = 196922880. Its totient is φ = 15350400.

The previous prime is 63893933. The next prime is 63893953. The reversal of 63893940 is 4939836.

It is a junction number, because it is equal to n+sod(n) for n = 63893892 and 63893901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86091 + ... + 86829.

It is an arithmetic number, because the mean of its divisors is an integer number (2051280).

Almost surely, 2^63893940 is an apocalyptic number.

63893940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63893940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98461440).

63893940 is an abundant number, since it is smaller than the sum of its proper divisors (133028940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63893940 is a wasteful number, since it uses less digits than its factorization.

63893940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893 (or 891 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 63893940 is about 7993.3685014517. The cubic root of 63893940 is about 399.7789194977.

The spelling of 63893940 in words is "sixty-three million, eight hundred ninety-three thousand, nine hundred forty".