29387047679 has 4 divisors (see below), whose sum is σ = 32058597480. Its totient is φ = 26715497880.

The previous prime is 29387047639. The next prime is 29387047693. The reversal of 29387047679 is 97674078392.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29387047679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29387047639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1335774884 + ... + 1335774905.

It is an arithmetic number, because the mean of its divisors is an integer number (8014649370).

Almost surely, 2^29387047679 is an apocalyptic number.

29387047679 is a deficient number, since it is larger than the sum of its proper divisors (2671549801).

29387047679 is a wasteful number, since it uses less digits than its factorization.

29387047679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671549800.

The product of its (nonzero) digits is 32006016, while the sum is 62.

The spelling of 29387047679 in words is "twenty-nine billion, three hundred eighty-seven million, forty-seven thousand, six hundred seventy-nine".