280089994 has 16 divisors (see below), whose sum is σ = 445314888. Its totient is φ = 131668992.

The previous prime is 280089961. The next prime is 280090043. The reversal of 280089994 is 499980082.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 279324369 + 765625 = 16713^2 + 875^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 33394 + ... + 40930.

Almost surely, 2^280089994 is an apocalyptic number.

280089994 is a deficient number, since it is larger than the sum of its proper divisors (165224894).

280089994 is a wasteful number, since it uses less digits than its factorization.

280089994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8649.

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 280089994 is about 16735.8893997301. The cubic root of 280089994 is about 654.2833441351.

The spelling of 280089994 in words is "two hundred eighty million, eighty-nine thousand, nine hundred ninety-four".