8689990 has 8 divisors (see below), whose sum is σ = 15642000. Its totient is φ = 3475992.

The previous prime is 8689987. The next prime is 8689997. The reversal of 8689990 is 999868.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8689997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434490 + ... + 434509.

It is an arithmetic number, because the mean of its divisors is an integer number (1955250).

Almost surely, 2^8689990 is an apocalyptic number.

8689990 is a deficient number, since it is larger than the sum of its proper divisors (6952010).

8689990 is a wasteful number, since it uses less digits than its factorization.

8689990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869006.

The product of its (nonzero) digits is 279936, while the sum is 49.

The square root of 8689990 is about 2947.8788984624. The cubic root of 8689990 is about 205.5921013938.

The spelling of 8689990 in words is "eight million, six hundred eighty-nine thousand, nine hundred ninety".