949394857 has 8 divisors (see below), whose sum is σ = 968541896. Its totient is φ = 930413952.

The previous prime is 949394839. The next prime is 949394867. The reversal of 949394857 is 758493949.

It can be written as a sum of positive squares in 4 ways, for example, as 3463321 + 945931536 = 1861^2 + 30756^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 949394857 - 2¹⁹ = 948870569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (949394867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29958 + ... + 52879.

It is an arithmetic number, because the mean of its divisors is an integer number (121067737).

Almost surely, 2^949394857 is an apocalyptic number.

It is an amenable number.

949394857 is a deficient number, since it is larger than the sum of its proper divisors (19147039).

949394857 is a wasteful number, since it uses less digits than its factorization.

949394857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83067.

The product of its digits is 9797760, while the sum is 58.

The square root of 949394857 is about 30812.2517353081. The cubic root of 949394857 is about 982.8387968024.

The spelling of 949394857 in words is "nine hundred forty-nine million, three hundred ninety-four thousand, eight hundred fifty-seven".