6900739049 has 4 divisors (see below), whose sum is σ = 6969063300. Its totient is φ = 6832414800.

The previous prime is 6900739039. The next prime is 6900739091. The reversal of 6900739049 is 9409370096.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6811531024 + 89208025 = 82532^2 + 9445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6900739049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6900738994 and 6900739012.

It is not an unprimeable number, because it can be changed into a prime (6900739039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34161974 + ... + 34162175.

It is an arithmetic number, because the mean of its divisors is an integer number (1742265825).

Almost surely, 2^6900739049 is an apocalyptic number.

It is an amenable number.

6900739049 is a deficient number, since it is larger than the sum of its proper divisors (68324251).

6900739049 is a wasteful number, since it uses less digits than its factorization.

6900739049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68324250.

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 6900739049 is about 83070.6870622845. The cubic root of 6900739049 is about 1903.8462298469.

The spelling of 6900739049 in words is "six billion, nine hundred million, seven hundred thirty-nine thousand, forty-nine".