40939263 has 20 divisors (see below), whose sum is σ = 61328608. Its totient is φ = 27216000.

The previous prime is 40939229. The next prime is 40939273. The reversal of 40939263 is 36293904.

It is a happy number.

It is not a de Polignac number, because 40939263 - 2¹⁰ = 40938239 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 (40939273) 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 19 ways as a sum of consecutive naturals, for example, 54138 + ... + 54888.

Almost surely, 2^40939263 is an apocalyptic number.

40939263 is a deficient number, since it is larger than the sum of its proper divisors (20389345).

40939263 is an equidigital number, since it uses as much as digits as its factorization.

40939263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436 (or 1427 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 40939263 is about 6398.3797167721. The cubic root of 40939263 is about 344.6513680434.

The spelling of 40939263 in words is "forty million, nine hundred thirty-nine thousand, two hundred sixty-three".