40339789 has 6 divisors (see below), whose sum is σ = 46925934. Its totient is φ = 34576920.

The previous prime is 40339763. The next prime is 40339853. The reversal of 40339789 is 98793304.

40339789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 39162564 + 1177225 = 6258^2 + 1085^2 .

It is not a de Polignac number, because 40339789 - 2¹⁵ = 40307021 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 (40336789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 411582 + ... + 411679.

It is an arithmetic number, because the mean of its divisors is an integer number (7820989).

Almost surely, 2^40339789 is an apocalyptic number.

40339789 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

40339789 is a deficient number, since it is larger than the sum of its proper divisors (6586145).

40339789 is an equidigital number, since it uses as much as digits as its factorization.

40339789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823275 (or 823268 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 40339789 is about 6351.3611926893. The cubic root of 40339789 is about 342.9608451765.

The spelling of 40339789 in words is "forty million, three hundred thirty-nine thousand, seven hundred eighty-nine".