1012004839 has 2 divisors, whose sum is σ = 1012004840. Its totient is φ = 1012004838.

The previous prime is 1012004831. The next prime is 1012004857. The reversal of 1012004839 is 9384002101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1012004839 - 2³ = 1012004831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012004831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506002419 + 506002420.

It is an arithmetic number, because the mean of its divisors is an integer number (506002420).

Almost surely, 2^1012004839 is an apocalyptic number.

1012004839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012004839 is an equidigital number, since it uses as much as digits as its factorization.

1012004839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1012004839 is about 31812.0234974137. The cubic root of 1012004839 is about 1003.9857060419.

The spelling of 1012004839 in words is "one billion, twelve million, four thousand, eight hundred thirty-nine".