8432981 has 2 divisors, whose sum is σ = 8432982. Its totient is φ = 8432980.

The previous prime is 8432959. The next prime is 8432987. The reversal of 8432981 is 1892348.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6002500 + 2430481 = 2450^2 + 1559^2 .

It is a cyclic number.

It is not a de Polignac number, because 8432981 - 2⁶ = 8432917 is a prime.

It is a super-2 number, since 2×8432981² = 142230337092722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p₅₆₆₉₃₆ and since 8432981 and 566936 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8432987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4216490 + 4216491.

It is an arithmetic number, because the mean of its divisors is an integer number (4216491).

Almost surely, 2^8432981 is an apocalyptic number.

It is an amenable number.

8432981 is a deficient number, since it is larger than the sum of its proper divisors (1).

8432981 is an equidigital number, since it uses as much as digits as its factorization.

8432981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 35.

The square root of 8432981 is about 2903.9595382856. The cubic root of 8432981 is about 203.5449697075.

The spelling of 8432981 in words is "eight million, four hundred thirty-two thousand, nine hundred eighty-one".