847157493 has 32 divisors (see below), whose sum is σ = 1392326656. Its totient is φ = 446171328.

The previous prime is 847157489. The next prime is 847157533. The reversal of 847157493 is 394751748.

It is a happy number.

It is not a de Polignac number, because 847157493 - 2² = 847157489 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (847157473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212880 + ... + 216822.

It is an arithmetic number, because the mean of its divisors is an integer number (43510208).

Almost surely, 2^847157493 is an apocalyptic number.

It is an amenable number.

847157493 is a deficient number, since it is larger than the sum of its proper divisors (545169163).

847157493 is a wasteful number, since it uses less digits than its factorization.

847157493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4753.

The product of its digits is 846720, while the sum is 48.

The square root of 847157493 is about 29105.9700577047. The cubic root of 847157493 is about 946.2111298656.

The spelling of 847157493 in words is "eight hundred forty-seven million, one hundred fifty-seven thousand, four hundred ninety-three".