857052449349 has 8 divisors (see below), whose sum is σ = 1143051330432. Its totient is φ = 571210933920.

The previous prime is 857052449321. The next prime is 857052449411. The reversal of 857052449349 is 943944250758.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 857052449349 - 2⁷ = 857052449221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 857052449292 and 857052449301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857052409349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39328704 + ... + 39350489.

It is an arithmetic number, because the mean of its divisors is an integer number (142881416304).

Almost surely, 2^857052449349 is an apocalyptic number.

It is an amenable number.

857052449349 is a deficient number, since it is larger than the sum of its proper divisors (285998881083).

857052449349 is a wasteful number, since it uses less digits than its factorization.

857052449349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78682827.

The product of its (nonzero) digits is 43545600, while the sum is 60.

The spelling of 857052449349 in words is "eight hundred fifty-seven billion, fifty-two million, four hundred forty-nine thousand, three hundred forty-nine".