8870399957 has 2 divisors, whose sum is σ = 8870399958. Its totient is φ = 8870399956.

The previous prime is 8870399939. The next prime is 8870400083. The reversal of 8870399957 is 7599930788.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8864975716 + 5424241 = 94154^2 + 2329^2 .

It is a cyclic number.

It is not a de Polignac number, because 8870399957 - 2³² = 4575432661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8870399893 and 8870399902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8870399357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4435199978 + 4435199979.

It is an arithmetic number, because the mean of its divisors is an integer number (4435199979).

Almost surely, 2^8870399957 is an apocalyptic number.

It is an amenable number.

8870399957 is a deficient number, since it is larger than the sum of its proper divisors (1).

8870399957 is an equidigital number, since it uses as much as digits as its factorization.

8870399957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34292160, while the sum is 65.

The square root of 8870399957 is about 94182.8007493937. The cubic root of 8870399957 is about 2070.0511051040.

The spelling of 8870399957 in words is "eight billion, eight hundred seventy million, three hundred ninety-nine thousand, nine hundred fifty-seven".