6849070639 has 4 divisors (see below), whose sum is σ = 6861108240. Its totient is φ = 6837033040.

The previous prime is 6849070607. The next prime is 6849070643. The reversal of 6849070639 is 9360709486.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9360709486 = 2 ⋅4680354743.

It is a cyclic number.

It is not a de Polignac number, because 6849070639 - 2⁵ = 6849070607 is a prime.

It is a super-4 number, since 4×6849070639⁴ (a number of 40 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6849070139) 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, 6017947 + ... + 6019084.

It is an arithmetic number, because the mean of its divisors is an integer number (1715277060).

Almost surely, 2^6849070639 is an apocalyptic number.

6849070639 is a deficient number, since it is larger than the sum of its proper divisors (12037601).

6849070639 is a wasteful number, since it uses less digits than its factorization.

6849070639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12037600.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The square root of 6849070639 is about 82759.1121206602. The cubic root of 6849070639 is about 1899.0827187224.

It can be divided in two parts, 68490 and 70639, that added together give a square (139129 = 373²).

The spelling of 6849070639 in words is "six billion, eight hundred forty-nine million, seventy thousand, six hundred thirty-nine".