8557389802 has 16 divisors (see below), whose sum is σ = 13874875560. Its totient is φ = 3934878912.

The previous prime is 8557389793. The next prime is 8557389809. The reversal of 8557389802 is 2089837558.

It can be written as a sum of positive squares in 4 ways, for example, as 3271954401 + 5285435401 = 57201^2 + 72701^2 .

It is not an unprimeable number, because it can be changed into a prime (8557389809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604773 + ... + 618760.

Almost surely, 2^8557389802 is an apocalyptic number.

8557389802 is a deficient number, since it is larger than the sum of its proper divisors (5317485758).

8557389802 is a wasteful number, since it uses less digits than its factorization.

8557389802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223817.

The product of its (nonzero) digits is 4838400, while the sum is 55.

The square root of 8557389802 is about 92506.1608867215. The cubic root of 8557389802 is about 2045.4102991678.

The spelling of 8557389802 in words is "eight billion, five hundred fifty-seven million, three hundred eighty-nine thousand, eight hundred two".