40439763 has 64 divisors (see below), whose sum is σ = 74905600. Its totient is φ = 20995200.

The previous prime is 40439761. The next prime is 40439783. The reversal of 40439763 is 36793404.

It is not a de Polignac number, because 40439763 - 2¹ = 40439761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40439761) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 267738 + ... + 267888.

It is an arithmetic number, because the mean of its divisors is an integer number (1170400).

Almost surely, 2^40439763 is an apocalyptic number.

40439763 is a deficient number, since it is larger than the sum of its proper divisors (34465837).

40439763 is a wasteful number, since it uses less digits than its factorization.

40439763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 40439763 is about 6359.2266039197. The cubic root of 40439763 is about 343.2439311215.

The spelling of 40439763 in words is "forty million, four hundred thirty-nine thousand, seven hundred sixty-three".