63440959 has 8 divisors (see below), whose sum is σ = 63942032. Its totient is φ = 62942400.

The previous prime is 63440941. The next prime is 63440963. The reversal of 63440959 is 95904436.

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

It is a cyclic number.

It is not a de Polignac number, because 63440959 - 2¹¹ = 63438911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63440939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105259 + ... + 105859.

It is an arithmetic number, because the mean of its divisors is an integer number (7992754).

Almost surely, 2^63440959 is an apocalyptic number.

63440959 is a deficient number, since it is larger than the sum of its proper divisors (501073).

63440959 is a wasteful number, since it uses less digits than its factorization.

63440959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 63440959 is about 7964.9833019285. The cubic root of 63440959 is about 398.8319235639.

The spelling of 63440959 in words is "sixty-three million, four hundred forty thousand, nine hundred fifty-nine".