1306517479 has 4 divisors (see below), whose sum is σ = 1306649880. Its totient is φ = 1306385080.

The previous prime is 1306517477. The next prime is 1306517497. The reversal of 1306517479 is 9747156031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9747156031 = 877 ⋅11114203.

It is a cyclic number.

It is not a de Polignac number, because 1306517479 - 2¹ = 1306517477 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 (1306517477) 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, 50092 + ... + 71569.

It is an arithmetic number, because the mean of its divisors is an integer number (326662470).

Almost surely, 2^1306517479 is an apocalyptic number.

1306517479 is a deficient number, since it is larger than the sum of its proper divisors (132401).

1306517479 is a wasteful number, since it uses less digits than its factorization.

1306517479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132400.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 1306517479 is about 36145.7809294529. The cubic root of 1306517479 is about 1093.2137230862.

The spelling of 1306517479 in words is "one billion, three hundred six million, five hundred seventeen thousand, four hundred seventy-nine".