8430981 has 8 divisors (see below), whose sum is σ = 12106080. Its totient is φ = 5188272.

The previous prime is 8430941. The next prime is 8431013. The reversal of 8430981 is 1890348.

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

It is not a de Polignac number, because 8430981 - 2¹⁰ = 8429957 is a prime.

It is a super-2 number, since 2×8430981² = 142162881244722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

8430981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8430941) 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, 108051 + ... + 108128.

It is an arithmetic number, because the mean of its divisors is an integer number (1513260).

Almost surely, 2^8430981 is an apocalyptic number.

It is an amenable number.

8430981 is a deficient number, since it is larger than the sum of its proper divisors (3675099).

8430981 is a wasteful number, since it uses less digits than its factorization.

8430981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216195.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 8430981 is about 2903.6151604508. The cubic root of 8430981 is about 203.5288772516.

The spelling of 8430981 in words is "eight million, four hundred thirty thousand, nine hundred eighty-one".