280152839 has 2 divisors, whose sum is σ = 280152840. Its totient is φ = 280152838.

The previous prime is 280152823. The next prime is 280152907. The reversal of 280152839 is 938251082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 280152839 - 2⁴ = 280152823 is a prime.

It is a super-2 number, since 2×280152839² = 156971226399519842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280154839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140076419 + 140076420.

It is an arithmetic number, because the mean of its divisors is an integer number (140076420).

Almost surely, 2^280152839 is an apocalyptic number.

280152839 is a deficient number, since it is larger than the sum of its proper divisors (1).

280152839 is an equidigital number, since it uses as much as digits as its factorization.

280152839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 280152839 is about 16737.7668462672. The cubic root of 280152839 is about 654.3322752676.

The spelling of 280152839 in words is "two hundred eighty million, one hundred fifty-two thousand, eight hundred thirty-nine".