9857629057 has 4 divisors (see below), whose sum is σ = 10098059076. Its totient is φ = 9617199040.

The previous prime is 9857629043. The next prime is 9857629069. The reversal of 9857629057 is 7509267589.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4408827201 + 5448801856 = 66399^2 + 73816^2 .

It is a cyclic number.

It is not a de Polignac number, because 9857629057 - 2⁷ = 9857628929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9857628992 and 9857629010.

It is not an unprimeable number, because it can be changed into a prime (9857629357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120214948 + ... + 120215029.

It is an arithmetic number, because the mean of its divisors is an integer number (2524514769).

Almost surely, 2^9857629057 is an apocalyptic number.

It is an amenable number.

9857629057 is a deficient number, since it is larger than the sum of its proper divisors (240430019).

9857629057 is a wasteful number, since it uses less digits than its factorization.

9857629057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240430018.

The product of its (nonzero) digits is 9525600, while the sum is 58.

The square root of 9857629057 is about 99285.5934010569. The cubic root of 9857629057 is about 2144.1614845307.

The spelling of 9857629057 in words is "nine billion, eight hundred fifty-seven million, six hundred twenty-nine thousand, fifty-seven".