8961999 has 8 divisors (see below), whose sum is σ = 12061440. Its totient is φ = 5918616.

The previous prime is 8961989. The next prime is 8962003. The reversal of 8961999 is 9991698.

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

It is not a de Polignac number, because 8961999 - 2⁴ = 8961983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8961959) 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, 13639 + ... + 14280.

It is an arithmetic number, because the mean of its divisors is an integer number (1507680).

Almost surely, 2^8961999 is an apocalyptic number.

8961999 is a deficient number, since it is larger than the sum of its proper divisors (3099441).

8961999 is a wasteful number, since it uses less digits than its factorization.

8961999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28029.

The product of its digits is 314928, while the sum is 51.

The square root of 8961999 is about 2993.6598003113. The cubic root of 8961999 is about 207.7152090501.

The spelling of 8961999 in words is "eight million, nine hundred sixty-one thousand, nine hundred ninety-nine".