8970991 has 8 divisors (see below), whose sum is σ = 9120384. Its totient is φ = 8823000.

The previous prime is 8970979. The next prime is 8971007. The reversal of 8970991 is 1990798.

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

It is a cyclic number.

It is not a de Polignac number, because 8970991 - 2⁵ = 8970959 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 (8970901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25680 + ... + 26026.

It is an arithmetic number, because the mean of its divisors is an integer number (1140048).

Almost surely, 2^8970991 is an apocalyptic number.

8970991 is a deficient number, since it is larger than the sum of its proper divisors (149393).

8970991 is a wasteful number, since it uses less digits than its factorization.

8970991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701.

The product of its (nonzero) digits is 40824, while the sum is 43.

The square root of 8970991 is about 2995.1612644397. The cubic root of 8970991 is about 207.7846560128.

The spelling of 8970991 in words is "eight million, nine hundred seventy thousand, nine hundred ninety-one".