4040789 has 2 divisors, whose sum is σ = 4040790. Its totient is φ = 4040788.

The previous prime is 4040783. The next prime is 4040797. The reversal of 4040789 is 9870404.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3833764 + 207025 = 1958^2 + 455^2 .

It is a cyclic number.

It is not a de Polignac number, because 4040789 - 2¹² = 4036693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4040783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2020394 + 2020395.

It is an arithmetic number, because the mean of its divisors is an integer number (2020395).

Almost surely, 2^4040789 is an apocalyptic number.

It is an amenable number.

4040789 is a deficient number, since it is larger than the sum of its proper divisors (1).

4040789 is an equidigital number, since it uses as much as digits as its factorization.

4040789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 4040789 is about 2010.1713857281. The cubic root of 4040789 is about 159.2778523165.

The spelling of 4040789 in words is "four million, forty thousand, seven hundred eighty-nine".