29478979479 has 8 divisors (see below), whose sum is σ = 39312889840. Its totient is φ = 19648861056.

The previous prime is 29478979469. The next prime is 29478979493. The reversal of 29478979479 is 97497987492.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 29478979479 - 2⁵ = 29478979447 is a prime.

It is a super-2 number, since 2×29478979479² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29478979479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29478979469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929794 + ... + 960975.

It is an arithmetic number, because the mean of its divisors is an integer number (4914111230).

Almost surely, 2^29478979479 is an apocalyptic number.

29478979479 is a deficient number, since it is larger than the sum of its proper divisors (9833910361).

29478979479 is a wasteful number, since it uses less digits than its factorization.

29478979479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895969.

The product of its digits is 576108288, while the sum is 75.

The spelling of 29478979479 in words is "twenty-nine billion, four hundred seventy-eight million, nine hundred seventy-nine thousand, four hundred seventy-nine".