40263 has 4 divisors (see below), whose sum is σ = 53688. Its totient is φ = 26840.

The previous prime is 40253. The next prime is 40277. The reversal of 40263 is 36204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40263 - 2⁵ = 40231 is a prime.

It is a super-2 number, since 2×40263² = 3242218338, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40213) 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, 6708 + ... + 6713.

It is an arithmetic number, because the mean of its divisors is an integer number (13422).

2⁴⁰²⁶³ is an apocalyptic number.

40263 is a deficient number, since it is larger than the sum of its proper divisors (13425).

40263 is a wasteful number, since it uses less digits than its factorization.

40263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13424.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 40263 is about 200.6564227729. The cubic root of 40263 is about 34.2743092026.

Adding to 40263 its reverse (36204), we get a palindrome (76467).

It can be divided in two parts, 402 and 63, that added together give a triangular number (465 = T₃₀).

The spelling of 40263 in words is "forty thousand, two hundred sixty-three".