263949 has 8 divisors (see below), whose sum is σ = 402240. Its totient is φ = 150816.

The previous prime is 263941. The next prime is 263951. The reversal of 263949 is 949362.

263949 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 263949 - 2³ = 263941 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁷ + 6³ + 9³ + 3 + 4⁹ + 9³ .

263949 is strictly pandigital in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6264 + ... + 6305.

It is an arithmetic number, because the mean of its divisors is an integer number (50280).

2²⁶³⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

263949 is a deficient number, since it is larger than the sum of its proper divisors (138291).

263949 is a wasteful number, since it uses less digits than its factorization.

263949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12579.

The product of its digits is 11664, while the sum is 33.

The square root of 263949 is about 513.7596714418. The cubic root of 263949 is about 64.1465554185.

The spelling of 263949 in words is "two hundred sixty-three thousand, nine hundred forty-nine".