4661389887 has 16 divisors (see below), whose sum is σ = 7748804352. Its totient is φ = 2421501120.

The previous prime is 4661389879. The next prime is 4661389891. The reversal of 4661389887 is 7889831664.

It is not a de Polignac number, because 4661389887 - 2³ = 4661389879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4661389887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4661389807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10089358 + ... + 10089819.

It is an arithmetic number, because the mean of its divisors is an integer number (484300272).

Almost surely, 2^4661389887 is an apocalyptic number.

4661389887 is a deficient number, since it is larger than the sum of its proper divisors (3087414465).

4661389887 is a wasteful number, since it uses less digits than its factorization.

4661389887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20179198.

The product of its digits is 13934592, while the sum is 60.

The square root of 4661389887 is about 68274.3721098920. The cubic root of 4661389887 is about 1670.4692153274.

The spelling of 4661389887 in words is "four billion, six hundred sixty-one million, three hundred eighty-nine thousand, eight hundred eighty-seven".