29920859 has 4 divisors (see below), whose sum is σ = 30886080. Its totient is φ = 28955640.

The previous prime is 29920853. The next prime is 29920871. The reversal of 29920859 is 95802992.

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

It is a cyclic number.

It is not a de Polignac number, because 29920859 - 2¹² = 29916763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29920853) 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, 482564 + ... + 482625.

It is an arithmetic number, because the mean of its divisors is an integer number (7721520).

Almost surely, 2^29920859 is an apocalyptic number.

29920859 is a deficient number, since it is larger than the sum of its proper divisors (965221).

29920859 is an equidigital number, since it uses as much as digits as its factorization.

29920859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965220.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 29920859 is about 5469.9962522839. The cubic root of 29920859 is about 310.4497772128.

The spelling of 29920859 in words is "twenty-nine million, nine hundred twenty thousand, eight hundred fifty-nine".