280380299 has 4 divisors (see below), whose sum is σ = 280986336. Its totient is φ = 279774264.

The previous prime is 280380277. The next prime is 280380301. The reversal of 280380299 is 992083082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 280380299 - 2¹⁶ = 280314763 is a prime.

It is a super-2 number, since 2×280380299² = 157226224134658802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280380209) 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 in 3 ways as a sum of consecutive naturals, for example, 302324 + ... + 303249.

It is an arithmetic number, because the mean of its divisors is an integer number (70246584).

Almost surely, 2^280380299 is an apocalyptic number.

280380299 is a deficient number, since it is larger than the sum of its proper divisors (606037).

280380299 is an equidigital number, since it uses as much as digits as its factorization.

280380299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606036.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 280380299 is about 16744.5602808793. The cubic root of 280380299 is about 654.5093145316.

The spelling of 280380299 in words is "two hundred eighty million, three hundred eighty thousand, two hundred ninety-nine".