846743649 has 4 divisors (see below), whose sum is σ = 1128991536. Its totient is φ = 564495764.

The previous prime is 846743621. The next prime is 846743663. The reversal of 846743649 is 946347648.

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.

It is a cyclic number.

It is not a de Polignac number, because 846743649 - 2⁵ = 846743617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (846743609) 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, 141123939 + ... + 141123944.

It is an arithmetic number, because the mean of its divisors is an integer number (282247884).

Almost surely, 2^846743649 is an apocalyptic number.

It is an amenable number.

846743649 is a deficient number, since it is larger than the sum of its proper divisors (282247887).

846743649 is a wasteful number, since it uses less digits than its factorization.

846743649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282247886.

The product of its digits is 3483648, while the sum is 51.

The square root of 846743649 is about 29098.8599261208. The cubic root of 846743649 is about 946.0570272407.

The spelling of 846743649 in words is "eight hundred forty-six million, seven hundred forty-three thousand, six hundred forty-nine".