1229479613 has 4 divisors (see below), whose sum is σ = 1231944000. Its totient is φ = 1227015228.

The previous prime is 1229479591. The next prime is 1229479639. The reversal of 1229479613 is 3169749221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3169749221 = 433 ⋅7320437.

It is a cyclic number.

It is not a de Polignac number, because 1229479613 - 2¹² = 1229475517 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 (1229475613) 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, 1231445 + ... + 1232442.

It is an arithmetic number, because the mean of its divisors is an integer number (307986000).

Almost surely, 2^1229479613 is an apocalyptic number.

It is an amenable number.

1229479613 is a deficient number, since it is larger than the sum of its proper divisors (2464387).

1229479613 is an equidigital number, since it uses as much as digits as its factorization.

1229479613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464386.

The product of its digits is 163296, while the sum is 44.

The square root of 1229479613 is about 35063.9360739778. The cubic root of 1229479613 is about 1071.2901469922.

The spelling of 1229479613 in words is "one billion, two hundred twenty-nine million, four hundred seventy-nine thousand, six hundred thirteen".