29891189 has 2 divisors, whose sum is σ = 29891190. Its totient is φ = 29891188.

The previous prime is 29891177. The next prime is 29891203. The reversal of 29891189 is 98119892.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29866225 + 24964 = 5465^2 + 158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29891189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29891129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14945594 + 14945595.

It is an arithmetic number, because the mean of its divisors is an integer number (14945595).

Almost surely, 2^29891189 is an apocalyptic number.

It is an amenable number.

29891189 is a deficient number, since it is larger than the sum of its proper divisors (1).

29891189 is an equidigital number, since it uses as much as digits as its factorization.

29891189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 47.

The square root of 29891189 is about 5467.2835119463. The cubic root of 29891189 is about 310.3471276289.

The spelling of 29891189 in words is "twenty-nine million, eight hundred ninety-one thousand, one hundred eighty-nine".