1040790109 has 4 divisors (see below), whose sum is σ = 1042365340. Its totient is φ = 1039214880.

The previous prime is 1040790083. The next prime is 1040790173. The reversal of 1040790109 is 9010970401.

1040790109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9010970401 = 163 ⋅55282027.

It can be written as a sum of positive squares in 2 ways, for example, as 803722500 + 237067609 = 28350^2 + 15397^2 .

It is a cyclic number.

It is not a de Polignac number, because 1040790109 - 2⁹ = 1040789597 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 (1040790809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786624 + ... + 787945.

It is an arithmetic number, because the mean of its divisors is an integer number (260591335).

Almost surely, 2^1040790109 is an apocalyptic number.

It is an amenable number.

1040790109 is a deficient number, since it is larger than the sum of its proper divisors (1575231).

1040790109 is an equidigital number, since it uses as much as digits as its factorization.

1040790109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575230.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 1040790109 is about 32261.2787874256. The cubic root of 1040790109 is about 1013.4159114255.

The spelling of 1040790109 in words is "one billion, forty million, seven hundred ninety thousand, one hundred nine".