63982440 has 64 divisors (see below), whose sum is σ = 213278400. Its totient is φ = 17061696.

The previous prime is 63982423. The next prime is 63982453. The reversal of 63982440 is 4428936.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 63982395 and 63982404.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28542 + ... + 30701.

It is an arithmetic number, because the mean of its divisors is an integer number (3332475).

Almost surely, 2^63982440 is an apocalyptic number.

63982440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63982440 is an abundant number, since it is smaller than the sum of its proper divisors (149295960).

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

63982440 is a wasteful number, since it uses less digits than its factorization.

63982440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59263 (or 59253 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 63982440 is about 7998.9024247080. The cubic root of 63982440 is about 399.9634133203.

The spelling of 63982440 in words is "sixty-three million, nine hundred eighty-two thousand, four hundred forty".