827140957 has 4 divisors (see below), whose sum is σ = 849496156. Its totient is φ = 804785760.

The previous prime is 827140939. The next prime is 827140961. The reversal of 827140957 is 759041728.

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 505620196 + 321520761 = 22486^2 + 17931^2 .

It is a cyclic number.

It is not a de Polignac number, because 827140957 - 2⁷ = 827140829 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 (827140997) 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, 11177544 + ... + 11177617.

It is an arithmetic number, because the mean of its divisors is an integer number (212374039).

Almost surely, 2^827140957 is an apocalyptic number.

It is an amenable number.

827140957 is a deficient number, since it is larger than the sum of its proper divisors (22355199).

827140957 is a wasteful number, since it uses less digits than its factorization.

827140957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22355198.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 827140957 is about 28760.0583622495. The cubic root of 827140957 is about 938.6993317109.

The spelling of 827140957 in words is "eight hundred twenty-seven million, one hundred forty thousand, nine hundred fifty-seven".