2278979039 has 4 divisors (see below), whose sum is σ = 2279142624. Its totient is φ = 2278815456.

The previous prime is 2278979009. The next prime is 2278979089. The reversal of 2278979039 is 9309798722.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2278979039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278979009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58727 + ... + 89480.

It is an arithmetic number, because the mean of its divisors is an integer number (569785656).

Almost surely, 2^2278979039 is an apocalyptic number.

2278979039 is a deficient number, since it is larger than the sum of its proper divisors (163585).

2278979039 is a wasteful number, since it uses less digits than its factorization.

2278979039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163584.

The product of its (nonzero) digits is 3429216, while the sum is 56.

The square root of 2278979039 is about 47738.6535105464. The cubic root of 2278979039 is about 1315.9723880026.

The spelling of 2278979039 in words is "two billion, two hundred seventy-eight million, nine hundred seventy-nine thousand, thirty-nine".