40789139 has 2 divisors, whose sum is σ = 40789140. Its totient is φ = 40789138.

The previous prime is 40789127. The next prime is 40789157. The reversal of 40789139 is 93198704.

It is a happy number.

40789139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40789139 - 2⁴ = 40789123 is a prime.

It is a super-2 number, since 2×40789139² = 3327507720722642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 40789096 and 40789105.

It is not a weakly prime, because it can be changed into another prime (40789159) 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, 20394569 + 20394570.

It is an arithmetic number, because the mean of its divisors is an integer number (20394570).

Almost surely, 2^40789139 is an apocalyptic number.

40789139 is a deficient number, since it is larger than the sum of its proper divisors (1).

40789139 is an equidigital number, since it uses as much as digits as its factorization.

40789139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 40789139 is about 6386.6375347283. The cubic root of 40789139 is about 344.2295739734.

The spelling of 40789139 in words is "forty million, seven hundred eighty-nine thousand, one hundred thirty-nine".