8606890042 has 4 divisors (see below), whose sum is σ = 12910335066. Its totient is φ = 4303445020.

The previous prime is 8606890001. The next prime is 8606890043. The reversal of 8606890042 is 2400986068.

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 only one way, i.e., 7504583641 + 1102306401 = 86629^2 + 33201^2 .

It is not an unprimeable number, because it can be changed into a prime (8606890043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2151722509 + ... + 2151722512.

Almost surely, 2^8606890042 is an apocalyptic number.

8606890042 is a deficient number, since it is larger than the sum of its proper divisors (4303445024).

8606890042 is a wasteful number, since it uses less digits than its factorization.

8606890042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4303445023.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 8606890042 is about 92773.3261341858. The cubic root of 8606890042 is about 2049.3466124727.

The spelling of 8606890042 in words is "eight billion, six hundred six million, eight hundred ninety thousand, forty-two".