8950991 has 4 divisors (see below), whose sum is σ = 10229712. Its totient is φ = 7672272.

The previous prime is 8950987. The next prime is 8951023. The reversal of 8950991 is 1990598.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8950991 - 2² = 8950987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8950901) 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 in 3 ways as a sum of consecutive naturals, for example, 639350 + ... + 639363.

It is an arithmetic number, because the mean of its divisors is an integer number (2557428).

Almost surely, 2^8950991 is an apocalyptic number.

8950991 is a deficient number, since it is larger than the sum of its proper divisors (1278721).

8950991 is a wasteful number, since it uses less digits than its factorization.

8950991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278720.

The product of its (nonzero) digits is 29160, while the sum is 41.

The square root of 8950991 is about 2991.8206831293. The cubic root of 8950991 is about 207.6301288561.

The spelling of 8950991 in words is "eight million, nine hundred fifty thousand, nine hundred ninety-one".