8408986 has 4 divisors (see below), whose sum is σ = 12613482. Its totient is φ = 4204492.

The previous prime is 8408971. The next prime is 8408989. The reversal of 8408986 is 6898048.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7458361 + 950625 = 2731^2 + 975^2 .

It is a super-2 number, since 2×8408986² = 141422091096392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8408989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2102245 + ... + 2102248.

Almost surely, 2^8408986 is an apocalyptic number.

8408986 is a deficient number, since it is larger than the sum of its proper divisors (4204496).

8408986 is a wasteful number, since it uses less digits than its factorization.

8408986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4204495.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 8408986 is about 2899.8251671437. The cubic root of 8408986 is about 203.3517323373.

The spelling of 8408986 in words is "eight million, four hundred eight thousand, nine hundred eighty-six".