29479403856 has 40 divisors (see below), whose sum is σ = 87034431424. Its totient is φ = 8422686720.

The previous prime is 29479403831. The next prime is 29479403857. The reversal of 29479403856 is 65830497492.

It is a junction number, because it is equal to n+sod(n) for n = 29479403796 and 29479403805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29479403857) 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, 43867825 + ... + 43868496.

Almost surely, 2^29479403856 is an apocalyptic number.

It is an amenable number.

29479403856 is an abundant number, since it is smaller than the sum of its proper divisors (57555027568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29479403856 is a wasteful number, since it uses less digits than its factorization.

29479403856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87736339 (or 87736333 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 29479403856 in words is "twenty-nine billion, four hundred seventy-nine million, four hundred three thousand, eight hundred fifty-six".