29700040689 has 40 divisors (see below), whose sum is σ = 51247155168. Its totient is φ = 16941191040.

The previous prime is 29700040679. The next prime is 29700040751. The reversal of 29700040689 is 98604000792.

It is a happy number.

It is not a de Polignac number, because 29700040689 - 2⁷ = 29700040561 is a prime.

29700040689 is a modest number, since divided by 40689 gives 297 as remainder.

It is not an unprimeable number, because it can be changed into a prime (29700040609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 965247 + ... + 995540.

Almost surely, 2^29700040689 is an apocalyptic number.

It is an amenable number.

29700040689 is a deficient number, since it is larger than the sum of its proper divisors (21547114479).

29700040689 is a wasteful number, since it uses less digits than its factorization.

29700040689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960827 (or 1960818 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 29700040689 in words is "twenty-nine billion, seven hundred million, forty thousand, six hundred eighty-nine".