40339751 has 2 divisors, whose sum is σ = 40339752. Its totient is φ = 40339750.

The previous prime is 40339697. The next prime is 40339763. The reversal of 40339751 is 15793304.

It is a happy number.

40339751 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40339751 - 2¹⁸ = 40077607 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40339151) 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 as a sum of consecutive naturals, namely, 20169875 + 20169876.

It is an arithmetic number, because the mean of its divisors is an integer number (20169876).

Almost surely, 2^40339751 is an apocalyptic number.

40339751 is a deficient number, since it is larger than the sum of its proper divisors (1).

40339751 is an equidigital number, since it uses as much as digits as its factorization.

40339751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 40339751 is about 6351.3582012039. The cubic root of 40339751 is about 342.9607374870.

The spelling of 40339751 in words is "forty million, three hundred thirty-nine thousand, seven hundred fifty-one".