863148921 has 8 divisors (see below), whose sum is σ = 1151674080. Its totient is φ = 575028192.

The previous prime is 863148907. The next prime is 863148931. The reversal of 863148921 is 129841368.

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

It is not a de Polignac number, because 863148921 - 2⁶ = 863148857 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (863148931) 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, 96091 + ... + 104688.

It is an arithmetic number, because the mean of its divisors is an integer number (143959260).

Almost surely, 2^863148921 is an apocalyptic number.

It is an amenable number.

863148921 is a deficient number, since it is larger than the sum of its proper divisors (288525159).

863148921 is a wasteful number, since it uses less digits than its factorization.

863148921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202215.

The product of its digits is 82944, while the sum is 42.

The square root of 863148921 is about 29379.3961986968. The cubic root of 863148921 is about 952.1277961016.

The spelling of 863148921 in words is "eight hundred sixty-three million, one hundred forty-eight thousand, nine hundred twenty-one".