5629809861 has 24 divisors (see below), whose sum is σ = 8770428576. Its totient is φ = 3459376800.

The previous prime is 5629809847. The next prime is 5629809863. The reversal of 5629809861 is 1689089265.

It is a happy number.

5629809861 is a `hidden beast` number, since 5 + 629 + 8 + 0 + 9 + 8 + 6 + 1 = 666.

It is not a de Polignac number, because 5629809861 - 2¹⁵ = 5629777093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5629809798 and 5629809807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5629809863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44686 + ... + 115136.

It is an arithmetic number, because the mean of its divisors is an integer number (365434524).

Almost surely, 2^5629809861 is an apocalyptic number.

It is an amenable number.

5629809861 is a deficient number, since it is larger than the sum of its proper divisors (3140618715).

5629809861 is a wasteful number, since it uses less digits than its factorization.

5629809861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71153 (or 71150 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The square root of 5629809861 is about 75032.0588881846. The cubic root of 5629809861 is about 1778.9534163453.

The spelling of 5629809861 in words is "five billion, six hundred twenty-nine million, eight hundred nine thousand, eight hundred sixty-one".