29012491 has 4 divisors (see below), whose sum is σ = 29070000. Its totient is φ = 28954984.

The previous prime is 29012471. The next prime is 29012507. The reversal of 29012491 is 19421092.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29012491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29012471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27991 + ... + 29008.

It is an arithmetic number, because the mean of its divisors is an integer number (7267500).

Almost surely, 2^29012491 is an apocalyptic number.

29012491 is a deficient number, since it is larger than the sum of its proper divisors (57509).

29012491 is an equidigital number, since it uses as much as digits as its factorization.

29012491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57508.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 29012491 is about 5386.3244425118. The cubic root of 29012491 is about 307.2757869375.

The spelling of 29012491 in words is "twenty-nine million, twelve thousand, four hundred ninety-one".