29881249 has 2 divisors, whose sum is σ = 29881250. Its totient is φ = 29881248.

The previous prime is 29881219. The next prime is 29881261. The reversal of 29881249 is 94218892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29778849 + 102400 = 5457^2 + 320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29881249 is a prime.

It is not a weakly prime, because it can be changed into another prime (29881219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14940624 + 14940625.

It is an arithmetic number, because the mean of its divisors is an integer number (14940625).

Almost surely, 2^29881249 is an apocalyptic number.

It is an amenable number.

29881249 is a deficient number, since it is larger than the sum of its proper divisors (1).

29881249 is an equidigital number, since it uses as much as digits as its factorization.

29881249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 43.

The square root of 29881249 is about 5466.3743925933. The cubic root of 29881249 is about 310.3127229257.

The spelling of 29881249 in words is "twenty-nine million, eight hundred eighty-one thousand, two hundred forty-nine".