8945981 has 8 divisors (see below), whose sum is σ = 9798528. Its totient is φ = 8100000.

The previous prime is 8945969. The next prime is 8945983. The reversal of 8945981 is 1895498.

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 8945981 - 2¹⁴ = 8929597 is a prime.

It is a super-2 number, since 2×8945981² = 160061152104722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8945983) 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, 1481 + ... + 4481.

It is an arithmetic number, because the mean of its divisors is an integer number (1224816).

Almost surely, 2^8945981 is an apocalyptic number.

It is an amenable number.

8945981 is a deficient number, since it is larger than the sum of its proper divisors (852547).

8945981 is a wasteful number, since it uses less digits than its factorization.

8945981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3283.

The product of its digits is 103680, while the sum is 44.

The square root of 8945981 is about 2990.9832831362. The cubic root of 8945981 is about 207.5913837576.

The spelling of 8945981 in words is "eight million, nine hundred forty-five thousand, nine hundred eighty-one".