913107857 has 4 divisors (see below), whose sum is σ = 916502580. Its totient is φ = 909713136.

The previous prime is 913107829. The next prime is 913107863. The reversal of 913107857 is 758701319.

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 49688401 + 863419456 = 7049^2 + 29384^2 .

It is a cyclic number.

It is not a de Polignac number, because 913107857 - 2¹² = 913103761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (913107827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1696958 + ... + 1697495.

It is an arithmetic number, because the mean of its divisors is an integer number (229125645).

Almost surely, 2^913107857 is an apocalyptic number.

It is an amenable number.

913107857 is a deficient number, since it is larger than the sum of its proper divisors (3394723).

913107857 is a wasteful number, since it uses less digits than its factorization.

913107857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3394722.

The product of its (nonzero) digits is 52920, while the sum is 41.

The square root of 913107857 is about 30217.6745796231. The cubic root of 913107857 is about 970.1540326473.

The spelling of 913107857 in words is "nine hundred thirteen million, one hundred seven thousand, eight hundred fifty-seven".