4639679961 has 16 divisors (see below), whose sum is σ = 7072137600. Its totient is φ = 2650439808.

The previous prime is 4639679929. The next prime is 4639679969. The reversal of 4639679961 is 1699769364.

It is not a de Polignac number, because 4639679961 - 2⁵ = 4639679929 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4639679895 and 4639679904.

It is not an unprimeable number, because it can be changed into a prime (4639679969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41005 + ... + 104693.

It is an arithmetic number, because the mean of its divisors is an integer number (442008600).

Almost surely, 2^4639679961 is an apocalyptic number.

It is an amenable number.

4639679961 is a deficient number, since it is larger than the sum of its proper divisors (2432457639).

4639679961 is a wasteful number, since it uses less digits than its factorization.

4639679961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67168.

The product of its digits is 13226976, while the sum is 60.

The square root of 4639679961 is about 68115.1962560485. The cubic root of 4639679961 is about 1667.8718347630.

The spelling of 4639679961 in words is "four billion, six hundred thirty-nine million, six hundred seventy-nine thousand, nine hundred sixty-one".