1039809442 has 32 divisors (see below), whose sum is σ = 1851822720. Its totient is φ = 428440320.

The previous prime is 1039809439. The next prime is 1039809457. The reversal of 1039809442 is 2449089301.

It is a junction number, because it is equal to n+sod(n) for n = 1039809395 and 1039809404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92533 + ... + 103159.

It is an arithmetic number, because the mean of its divisors is an integer number (57869460).

Almost surely, 2^1039809442 is an apocalyptic number.

1039809442 is a deficient number, since it is larger than the sum of its proper divisors (812013278).

1039809442 is a wasteful number, since it uses less digits than its factorization.

1039809442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10906.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 1039809442 is about 32246.0763814762. The cubic root of 1039809442 is about 1013.0975200309.

The spelling of 1039809442 in words is "one billion, thirty-nine million, eight hundred nine thousand, four hundred forty-two".