40810789 has 2 divisors, whose sum is σ = 40810790. Its totient is φ = 40810788.

The previous prime is 40810771. The next prime is 40810813. The reversal of 40810789 is 98701804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35497764 + 5313025 = 5958^2 + 2305^2 .

It is a cyclic number.

It is not a de Polignac number, because 40810789 - 2⁹ = 40810277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40810739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20405394 + 20405395.

It is an arithmetic number, because the mean of its divisors is an integer number (20405395).

Almost surely, 2^40810789 is an apocalyptic number.

It is an amenable number.

40810789 is a deficient number, since it is larger than the sum of its proper divisors (1).

40810789 is an equidigital number, since it uses as much as digits as its factorization.

40810789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 40810789 is about 6388.3322549786. The cubic root of 40810789 is about 344.2904664258.

The spelling of 40810789 in words is "forty million, eight hundred ten thousand, seven hundred eighty-nine".