29924791849 has 4 divisors (see below), whose sum is σ = 29944890580. Its totient is φ = 29904693120.

The previous prime is 29924791837. The next prime is 29924791937. The reversal of 29924791849 is 94819742992.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15701844249 + 14222947600 = 125307^2 + 119260^2 .

It is a cyclic number.

It is not a de Polignac number, because 29924791849 - 2²⁹ = 29387920937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29924791049) 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, 10047132 + ... + 10050109.

It is an arithmetic number, because the mean of its divisors is an integer number (7486222645).

Almost surely, 2^29924791849 is an apocalyptic number.

It is an amenable number.

29924791849 is a deficient number, since it is larger than the sum of its proper divisors (20098731).

29924791849 is a wasteful number, since it uses less digits than its factorization.

29924791849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20098730.

The product of its digits is 23514624, while the sum is 64.

The spelling of 29924791849 in words is "twenty-nine billion, nine hundred twenty-four million, seven hundred ninety-one thousand, eight hundred forty-nine".