1306700839 has 4 divisors (see below), whose sum is σ = 1306981656. Its totient is φ = 1306420024.

The previous prime is 1306700797. The next prime is 1306700867. The reversal of 1306700839 is 9380076031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9380076031 = 2083 ⋅4503157.

It is a cyclic number.

It is not a de Polignac number, because 1306700839 - 2¹⁵ = 1306668071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1306700798 and 1306700807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306700939) 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, 133309 + ... + 142774.

It is an arithmetic number, because the mean of its divisors is an integer number (326745414).

Almost surely, 2^1306700839 is an apocalyptic number.

1306700839 is a deficient number, since it is larger than the sum of its proper divisors (280817).

1306700839 is an equidigital number, since it uses as much as digits as its factorization.

1306700839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280816.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 1306700839 is about 36148.3172360761. The cubic root of 1306700839 is about 1093.2648621626.

The spelling of 1306700839 in words is "one billion, three hundred six million, seven hundred thousand, eight hundred thirty-nine".