863311421 has 8 divisors (see below), whose sum is σ = 990284544. Its totient is φ = 737249040.

The previous prime is 863311409. The next prime is 863311433. The reversal of 863311421 is 124113368.

It is an interprime number because it is at equal distance from previous prime (863311409) and next prime (863311433).

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

It is a cyclic number.

It is not a de Polignac number, because 863311421 - 2¹⁰ = 863310397 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 (863311021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225650 + ... + 229443.

It is an arithmetic number, because the mean of its divisors is an integer number (123785568).

Almost surely, 2^863311421 is an apocalyptic number.

It is an amenable number.

863311421 is a deficient number, since it is larger than the sum of its proper divisors (126973123).

863311421 is a wasteful number, since it uses less digits than its factorization.

863311421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455371.

The product of its digits is 3456, while the sum is 29.

The square root of 863311421 is about 29382.1616121074. The cubic root of 863311421 is about 952.1875428632.

Adding to 863311421 its reverse (124113368), we get a palindrome (987424789).

The spelling of 863311421 in words is "eight hundred sixty-three million, three hundred eleven thousand, four hundred twenty-one".