857693453 has 4 divisors (see below), whose sum is σ = 857881440. Its totient is φ = 857505468.

The previous prime is 857693429. The next prime is 857693467. The reversal of 857693453 is 354396758.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 354396758 = 2 ⋅177198379.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-857693453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857693153) 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, 86975 + ... + 96332.

It is an arithmetic number, because the mean of its divisors is an integer number (214470360).

Almost surely, 2^857693453 is an apocalyptic number.

It is an amenable number.

857693453 is a deficient number, since it is larger than the sum of its proper divisors (187987).

857693453 is a wasteful number, since it uses less digits than its factorization.

857693453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187986.

The product of its digits is 2721600, while the sum is 50.

The square root of 857693453 is about 29286.4038932744. The cubic root of 857693453 is about 950.1176042773.

The spelling of 857693453 in words is "eight hundred fifty-seven million, six hundred ninety-three thousand, four hundred fifty-three".