1002112839 has 48 divisors (see below), whose sum is σ = 1875328000. Its totient is φ = 500758848.

The previous prime is 1002112831. The next prime is 1002112841. The reversal of 1002112839 is 9382112001.

It is not a de Polignac number, because 1002112839 - 2³ = 1002112831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002112831) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16639 + ... + 47760.

Almost surely, 2^1002112839 is an apocalyptic number.

1002112839 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1002112839 is a deficient number, since it is larger than the sum of its proper divisors (873215161).

1002112839 is a wasteful number, since it uses less digits than its factorization.

1002112839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64444 (or 64441 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1002112839 is about 31656.1658922871. The cubic root of 1002112839 is about 1000.7037842382.

The spelling of 1002112839 in words is "one billion, two million, one hundred twelve thousand, eight hundred thirty-nine".