29989963 has 4 divisors (see below), whose sum is σ = 30687448. Its totient is φ = 29292480.

The previous prime is 29989951. The next prime is 29989987. The reversal of 29989963 is 36998992.

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-29989963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29989913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348678 + ... + 348763.

It is an arithmetic number, because the mean of its divisors is an integer number (7671862).

Almost surely, 2^29989963 is an apocalyptic number.

29989963 is a deficient number, since it is larger than the sum of its proper divisors (697485).

29989963 is an equidigital number, since it uses as much as digits as its factorization.

29989963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697484.

The product of its digits is 1889568, while the sum is 55.

The square root of 29989963 is about 5476.3092498507. The cubic root of 29989963 is about 310.6885941827.

The spelling of 29989963 in words is "twenty-nine million, nine hundred eighty-nine thousand, nine hundred sixty-three".