279980064 has 240 divisors, whose sum is σ = 1014285888. Its totient is φ = 73778688.

The previous prime is 279980017. The next prime is 279980111. The reversal of 279980064 is 460089972.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (279980017) and next prime (279980111).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 235279 + ... + 236465.

Almost surely, 2^279980064 is an apocalyptic number.

279980064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 279980064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (507142944).

279980064 is an abundant number, since it is smaller than the sum of its proper divisors (734305824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

279980064 is a wasteful number, since it uses less digits than its factorization.

279980064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229 (or 1212 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 279980064 is about 16732.6048181387. The cubic root of 279980064 is about 654.1977350078.

The spelling of 279980064 in words is "two hundred seventy-nine million, nine hundred eighty thousand, sixty-four".