63441709 has 4 divisors (see below), whose sum is σ = 63460060. Its totient is φ = 63423360.

The previous prime is 63441701. The next prime is 63441713. The reversal of 63441709 is 90714436.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23474025 + 39967684 = 4845^2 + 6322^2 .

It is a cyclic number.

It is not a de Polignac number, because 63441709 - 2³ = 63441701 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 (63441701) 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, 2244 + ... + 11485.

It is an arithmetic number, because the mean of its divisors is an integer number (15865015).

Almost surely, 2^63441709 is an apocalyptic number.

It is an amenable number.

63441709 is a deficient number, since it is larger than the sum of its proper divisors (18351).

63441709 is a wasteful number, since it uses less digits than its factorization.

63441709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18350.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 63441709 is about 7965.0303828673. The cubic root of 63441709 is about 398.8334952234.

The spelling of 63441709 in words is "sixty-three million, four hundred forty-one thousand, seven hundred nine".