945439857 has 12 divisors (see below), whose sum is σ = 1416214800. Its totient is φ = 630293076.

The previous prime is 945439849. The next prime is 945439879. The reversal of 945439857 is 758934549.

945439857 is a `hidden beast` number, since 9 + 4 + 543 + 98 + 5 + 7 = 666.

It is not a de Polignac number, because 945439857 - 2³ = 945439849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (945439757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1945107 + ... + 1945592.

It is an arithmetic number, because the mean of its divisors is an integer number (118017900).

Almost surely, 2^945439857 is an apocalyptic number.

It is an amenable number.

945439857 is a deficient number, since it is larger than the sum of its proper divisors (470774943).

945439857 is an equidigital number, since it uses as much as digits as its factorization.

945439857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3890714 (or 3890702 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The square root of 945439857 is about 30748.0057402102. The cubic root of 945439857 is about 981.4721235580.

The spelling of 945439857 in words is "nine hundred forty-five million, four hundred thirty-nine thousand, eight hundred fifty-seven".