949859857 has 2 divisors, whose sum is σ = 949859858. Its totient is φ = 949859856.

The previous prime is 949859849. The next prime is 949859863. The reversal of 949859857 is 758958949.

949859857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 812478016 + 137381841 = 28504^2 + 11721^2 .

It is a cyclic number.

It is not a de Polignac number, because 949859857 - 2³ = 949859849 is a prime.

It is not a weakly prime, because it can be changed into another prime (949859557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474929928 + 474929929.

It is an arithmetic number, because the mean of its divisors is an integer number (474929929).

Almost surely, 2^949859857 is an apocalyptic number.

It is an amenable number.

949859857 is a deficient number, since it is larger than the sum of its proper divisors (1).

949859857 is an equidigital number, since it uses as much as digits as its factorization.

949859857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32659200, while the sum is 64.

The square root of 949859857 is about 30819.7965113334. The cubic root of 949859857 is about 982.9992307333. Note that the first 3 decimals are identical.

The spelling of 949859857 in words is "nine hundred forty-nine million, eight hundred fifty-nine thousand, eight hundred fifty-seven".