29889955 has 4 divisors (see below), whose sum is σ = 35867952. Its totient is φ = 23911960.

The previous prime is 29889953. The next prime is 29889971. The reversal of 29889955 is 55998892.

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

It is not a de Polignac number, because 29889955 - 2¹ = 29889953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29889896 and 29889905.

It is not an unprimeable number, because it can be changed into a prime (29889953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2988991 + ... + 2989000.

It is an arithmetic number, because the mean of its divisors is an integer number (8966988).

Almost surely, 2^29889955 is an apocalyptic number.

29889955 is a deficient number, since it is larger than the sum of its proper divisors (5977997).

29889955 is an equidigital number, since it uses as much as digits as its factorization.

29889955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5977996.

The product of its digits is 2332800, while the sum is 55.

The square root of 29889955 is about 5467.1706576620. The cubic root of 29889955 is about 310.3428568762.

The spelling of 29889955 in words is "twenty-nine million, eight hundred eighty-nine thousand, nine hundred fifty-five".