8408245657 has 12 divisors (see below), whose sum is σ = 9705590848. Its totient is φ = 7135650000.

The previous prime is 8408245649. The next prime is 8408245667. The reversal of 8408245657 is 7565428048.

It is not a de Polignac number, because 8408245657 - 2³ = 8408245649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8408245657.

It is not an unprimeable number, because it can be changed into a prime (8408245667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12532 + ... + 130282.

Almost surely, 2^8408245657 is an apocalyptic number.

It is an amenable number.

8408245657 is a deficient number, since it is larger than the sum of its proper divisors (1297345191).

8408245657 is a wasteful number, since it uses less digits than its factorization.

8408245657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117960 (or 117859 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 49.

The square root of 8408245657 is about 91696.4866120835. The cubic root of 8408245657 is about 2033.4576433869.

The spelling of 8408245657 in words is "eight billion, four hundred eight million, two hundred forty-five thousand, six hundred fifty-seven".