29929719408 has 20 divisors (see below), whose sum is σ = 77318441928. Its totient is φ = 9976573120.

The previous prime is 29929719401. The next prime is 29929719433. The reversal of 29929719408 is 80491792992.

It is a super-2 number, since 2×29929719408² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29929719401) 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, 311767863 + ... + 311767958.

Almost surely, 2^29929719408 is an apocalyptic number.

It is an amenable number.

29929719408 is an abundant number, since it is smaller than the sum of its proper divisors (47388722520).

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

29929719408 is a wasteful number, since it uses less digits than its factorization.

29929719408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623535832 (or 623535826 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 60.

The spelling of 29929719408 in words is "twenty-nine billion, nine hundred twenty-nine million, seven hundred nineteen thousand, four hundred eight".