29855149 has 4 divisors (see below), whose sum is σ = 29867740. Its totient is φ = 29842560.

The previous prime is 29855143. The next prime is 29855159. The reversal of 29855149 is 94155892.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 17556100 + 12299049 = 4190^2 + 3507^2 .

It is a cyclic number.

It is not a de Polignac number, because 29855149 - 2³ = 29855141 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 (29855141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1542 + ... + 7879.

It is an arithmetic number, because the mean of its divisors is an integer number (7466935).

Almost surely, 2^29855149 is an apocalyptic number.

It is an amenable number.

29855149 is a deficient number, since it is larger than the sum of its proper divisors (12591).

29855149 is an equidigital number, since it uses as much as digits as its factorization.

29855149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12590.

The product of its digits is 129600, while the sum is 43.

The square root of 29855149 is about 5463.9865482997. The cubic root of 29855149 is about 310.2223482864. Note that the first 3 decimals are identical.

The spelling of 29855149 in words is "twenty-nine million, eight hundred fifty-five thousand, one hundred forty-nine".