8699381 has 2 divisors, whose sum is σ = 8699382. Its totient is φ = 8699380.

The previous prime is 8699351. The next prime is 8699387. The reversal of 8699381 is 1839968.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4431025 + 4268356 = 2105^2 + 2066^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8699381 is a prime.

It is a super-2 number, since 2×8699381² = 151358459566322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8699387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4349690 + 4349691.

It is an arithmetic number, because the mean of its divisors is an integer number (4349691).

Almost surely, 2^8699381 is an apocalyptic number.

It is an amenable number.

8699381 is a deficient number, since it is larger than the sum of its proper divisors (1).

8699381 is an equidigital number, since it uses as much as digits as its factorization.

8699381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 44.

The square root of 8699381 is about 2949.4713085568. The cubic root of 8699381 is about 205.6661337135. Note that the first 3 decimals are identical.

The spelling of 8699381 in words is "eight million, six hundred ninety-nine thousand, three hundred eighty-one".