857294461 has 4 divisors (see below), whose sum is σ = 878204124. Its totient is φ = 836384800.

The previous prime is 857294443. The next prime is 857294507. The reversal of 857294461 is 164492758.

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 413349561 + 443944900 = 20331^2 + 21070^2 .

It is a cyclic number.

It is not a de Polignac number, because 857294461 - 2¹¹ = 857292413 is a prime.

It is a super-2 number, since 2×857294461² = 1469907585722561042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857294401) 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, 10454770 + ... + 10454851.

It is an arithmetic number, because the mean of its divisors is an integer number (219551031).

Almost surely, 2^857294461 is an apocalyptic number.

It is an amenable number.

857294461 is a deficient number, since it is larger than the sum of its proper divisors (20909663).

857294461 is a wasteful number, since it uses less digits than its factorization.

857294461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20909662.

The product of its digits is 483840, while the sum is 46.

The square root of 857294461 is about 29279.5912027473. The cubic root of 857294461 is about 949.9702524388.

The spelling of 857294461 in words is "eight hundred fifty-seven million, two hundred ninety-four thousand, four hundred sixty-one".