2779139002 has 4 divisors (see below), whose sum is σ = 4168708506. Its totient is φ = 1389569500.

The previous prime is 2779138963. The next prime is 2779139003. The reversal of 2779139002 is 2009319772.

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

It can be written as a sum of positive squares in only one way, i.e., 1916600841 + 862538161 = 43779^2 + 29369^2 .

It is a super-2 number, since 2×2779139002² = 15447227184875112008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2779139003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694784749 + ... + 694784752.

Almost surely, 2^2779139002 is an apocalyptic number.

2779139002 is a deficient number, since it is larger than the sum of its proper divisors (1389569504).

2779139002 is a wasteful number, since it uses less digits than its factorization.

2779139002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389569503.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 2779139002 is about 52717.5397946452. The cubic root of 2779139002 is about 1405.9506915335.

The spelling of 2779139002 in words is "two billion, seven hundred seventy-nine million, one hundred thirty-nine thousand, two".