284840039 has 16 divisors (see below), whose sum is σ = 328423680. Its totient is φ = 244316160.

The previous prime is 284840029. The next prime is 284840053. The reversal of 284840039 is 930048482.

It is a de Polignac number, because none of the positive numbers 2^k-284840039 is a prime.

It is a super-2 number, since 2×284840039² = 162267695635043042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 284839984 and 284840011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284840009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51062 + ... + 56364.

It is an arithmetic number, because the mean of its divisors is an integer number (20526480).

Almost surely, 2^284840039 is an apocalyptic number.

284840039 is a deficient number, since it is larger than the sum of its proper divisors (43583641).

284840039 is a wasteful number, since it uses less digits than its factorization.

284840039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5590.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 284840039 is about 16877.2047152365. The cubic root of 284840039 is about 657.9612931965.

The spelling of 284840039 in words is "two hundred eighty-four million, eight hundred forty thousand, thirty-nine".