863949355 has 8 divisors (see below), whose sum is σ = 1040566464. Its totient is φ = 688608000.

The previous prime is 863949349. The next prime is 863949397. The reversal of 863949355 is 553949368.

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

It is not a de Polignac number, because 863949355 - 2⁷ = 863949227 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317446 + ... + 320155.

It is an arithmetic number, because the mean of its divisors is an integer number (130070808).

Almost surely, 2^863949355 is an apocalyptic number.

863949355 is a deficient number, since it is larger than the sum of its proper divisors (176617109).

863949355 is a wasteful number, since it uses less digits than its factorization.

863949355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637877.

The product of its digits is 3499200, while the sum is 52.

The square root of 863949355 is about 29393.0154118287. The cubic root of 863949355 is about 952.4220211121.

The spelling of 863949355 in words is "eight hundred sixty-three million, nine hundred forty-nine thousand, three hundred fifty-five".