283778239 has 2 divisors, whose sum is σ = 283778240. Its totient is φ = 283778238.

The previous prime is 283778221. The next prime is 283778279. The reversal of 283778239 is 932877382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 283778239 - 2⁵ = 283778207 is a prime.

It is a super-2 number, since 2×283778239² = 161060177859882242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 283778192 and 283778201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (283778279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141889119 + 141889120.

It is an arithmetic number, because the mean of its divisors is an integer number (141889120).

Almost surely, 2^283778239 is an apocalyptic number.

283778239 is a deficient number, since it is larger than the sum of its proper divisors (1).

283778239 is an equidigital number, since it uses as much as digits as its factorization.

283778239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 49.

The square root of 283778239 is about 16845.7187142609. The cubic root of 283778239 is about 657.1427130637.

The spelling of 283778239 in words is "two hundred eighty-three million, seven hundred seventy-eight thousand, two hundred thirty-nine".