29011989 has 4 divisors (see below), whose sum is σ = 38682656. Its totient is φ = 19341324.

The previous prime is 29011973. The next prime is 29011991. The reversal of 29011989 is 98911092.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 29011989 - 2⁴ = 29011973 is a prime.

It is a super-2 number, since 2×29011989² = 1683391011472242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29011189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4835329 + ... + 4835334.

It is an arithmetic number, because the mean of its divisors is an integer number (9670664).

Almost surely, 2^29011989 is an apocalyptic number.

It is an amenable number.

29011989 is a deficient number, since it is larger than the sum of its proper divisors (9670667).

29011989 is an equidigital number, since it uses as much as digits as its factorization.

29011989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9670666.

The product of its (nonzero) digits is 11664, while the sum is 39.

The square root of 29011989 is about 5386.2778428150. The cubic root of 29011989 is about 307.2740146740.

The spelling of 29011989 in words is "twenty-nine million, eleven thousand, nine hundred eighty-nine".