29839989 has 8 divisors (see below), whose sum is σ = 39812032. Its totient is φ = 19880640.

The previous prime is 29839987. The next prime is 29840021. The reversal of 29839989 is 98993892.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 29839989 - 2¹ = 29839987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29839987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6744 + ... + 10254.

It is an arithmetic number, because the mean of its divisors is an integer number (4976504).

Almost surely, 2^29839989 is an apocalyptic number.

It is an amenable number.

29839989 is a deficient number, since it is larger than the sum of its proper divisors (9972043).

29839989 is a wasteful number, since it uses less digits than its factorization.

29839989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6347.

The product of its digits is 2519424, while the sum is 57.

The square root of 29839989 is about 5462.5991066524. The cubic root of 29839989 is about 310.1698306335.

The spelling of 29839989 in words is "twenty-nine million, eight hundred thirty-nine thousand, nine hundred eighty-nine".