278079049 has 4 divisors (see below), whose sum is σ = 278456080. Its totient is φ = 277702020.

The previous prime is 278079031. The next prime is 278079059. The reversal of 278079049 is 940970872.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 278079049 - 2¹⁵ = 278046281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (278079059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187407 + ... + 188884.

It is an arithmetic number, because the mean of its divisors is an integer number (69614020).

Almost surely, 2^278079049 is an apocalyptic number.

It is an amenable number.

278079049 is a deficient number, since it is larger than the sum of its proper divisors (377031).

278079049 is an equidigital number, since it uses as much as digits as its factorization.

278079049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377030.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 278079049 is about 16675.7023540240. The cubic root of 278079049 is about 652.7137423587.

It can be divided in two parts, 27807 and 9049, that added together give a triangular number (36856 = T₂₇₁).

The spelling of 278079049 in words is "two hundred seventy-eight million, seventy-nine thousand, forty-nine".