4090809428 has 12 divisors (see below), whose sum is σ = 7159372500. Its totient is φ = 2045274432.

The previous prime is 4090809413. The next prime is 4090809479. The reversal of 4090809428 is 8249080904.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1920367684 + 2170441744 = 43822^2 + 46588^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86198 + ... + 124946.

It is an arithmetic number, because the mean of its divisors is an integer number (596614375).

Almost surely, 2^4090809428 is an apocalyptic number.

It is an amenable number.

4090809428 is a deficient number, since it is larger than the sum of its proper divisors (3068563072).

4090809428 is a wasteful number, since it uses less digits than its factorization.

4090809428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65146 (or 65144 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 4090809428 is about 63959.4358011388. The cubic root of 4090809428 is about 1599.3238585816.

The spelling of 4090809428 in words is "four billion, ninety million, eight hundred nine thousand, four hundred twenty-eight".