29491489 has 4 divisors (see below), whose sum is σ = 29895556. Its totient is φ = 29087424.

The previous prime is 29491459. The next prime is 29491499. The reversal of 29491489 is 98419492.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19360000 + 10131489 = 4400^2 + 3183^2 .

It is a cyclic number.

It is not a de Polignac number, because 29491489 - 2⁹ = 29490977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29491409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201924 + ... + 202069.

It is an arithmetic number, because the mean of its divisors is an integer number (7473889).

Almost surely, 2^29491489 is an apocalyptic number.

It is an amenable number.

29491489 is a deficient number, since it is larger than the sum of its proper divisors (404067).

29491489 is an equidigital number, since it uses as much as digits as its factorization.

29491489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404066.

The product of its digits is 186624, while the sum is 46.

The square root of 29491489 is about 5430.6066880230. The cubic root of 29491489 is about 308.9576122807.

The spelling of 29491489 in words is "twenty-nine million, four hundred ninety-one thousand, four hundred eighty-nine".