29161889 has 2 divisors, whose sum is σ = 29161890. Its totient is φ = 29161888.

The previous prime is 29161877. The next prime is 29161927. The reversal of 29161889 is 98816192.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14592400 + 14569489 = 3820^2 + 3817^2 .

It is a cyclic number.

It is not a de Polignac number, because 29161889 - 2²⁰ = 28113313 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (29161859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14580944 + 14580945.

It is an arithmetic number, because the mean of its divisors is an integer number (14580945).

Almost surely, 2^29161889 is an apocalyptic number.

It is an amenable number.

29161889 is a deficient number, since it is larger than the sum of its proper divisors (1).

29161889 is an equidigital number, since it uses as much as digits as its factorization.

29161889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 44.

The square root of 29161889 is about 5400.1749045749. The cubic root of 29161889 is about 307.8023166463.

The spelling of 29161889 in words is "twenty-nine million, one hundred sixty-one thousand, eight hundred eighty-nine".