63440994 has 16 divisors (see below), whose sum is σ = 126960768. Its totient is φ = 21133872.

The previous prime is 63440987. The next prime is 63441011. The reversal of 63440994 is 49904436.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15159 + ... + 18885.

It is an arithmetic number, because the mean of its divisors is an integer number (7935048).

Almost surely, 2^63440994 is an apocalyptic number.

63440994 is an abundant number, since it is smaller than the sum of its proper divisors (63519774).

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

63440994 is a wasteful number, since it uses less digits than its factorization.

63440994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6569.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 63440994 is about 7964.9854990452. The cubic root of 63440994 is about 398.8319969082.

The spelling of 63440994 in words is "sixty-three million, four hundred forty thousand, nine hundred ninety-four".