8404386131 has 2 divisors, whose sum is σ = 8404386132. Its totient is φ = 8404386130.

The previous prime is 8404386097. The next prime is 8404386143. The reversal of 8404386131 is 1316834048.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8404386131 is a prime.

It is a super-2 number, since 2×8404386131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8404386931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4202193065 + 4202193066.

It is an arithmetic number, because the mean of its divisors is an integer number (4202193066).

Almost surely, 2^8404386131 is an apocalyptic number.

8404386131 is a deficient number, since it is larger than the sum of its proper divisors (1).

8404386131 is an equidigital number, since it uses as much as digits as its factorization.

8404386131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 8404386131 is about 91675.4390826682. The cubic root of 8404386131 is about 2033.1464653645.

The spelling of 8404386131 in words is "eight billion, four hundred four million, three hundred eighty-six thousand, one hundred thirty-one".