63440953 has 4 divisors (see below), whose sum is σ = 64916368. Its totient is φ = 61965540.

The previous prime is 63440941. The next prime is 63440963. The reversal of 63440953 is 35904436.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63440953 - 2⁵ = 63440921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63440963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 737643 + ... + 737728.

It is an arithmetic number, because the mean of its divisors is an integer number (16229092).

Almost surely, 2^63440953 is an apocalyptic number.

It is an amenable number.

63440953 is a deficient number, since it is larger than the sum of its proper divisors (1475415).

63440953 is a wasteful number, since it uses less digits than its factorization.

63440953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475414.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 63440953 is about 7964.9829252799. The cubic root of 63440953 is about 398.8319109905.

The spelling of 63440953 in words is "sixty-three million, four hundred forty thousand, nine hundred fifty-three".