29839521 has 12 divisors (see below), whose sum is σ = 41208752. Its totient is φ = 19205424.

The previous prime is 29839493. The next prime is 29839529. The reversal of 29839521 is 12593892.

It is not a de Polignac number, because 29839521 - 2⁵ = 29839489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29839521.

It is not an unprimeable number, because it can be changed into a prime (29839529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3391 + ... + 8436.

Almost surely, 2^29839521 is an apocalyptic number.

It is an amenable number.

29839521 is a deficient number, since it is larger than the sum of its proper divisors (11369231).

29839521 is a wasteful number, since it uses less digits than its factorization.

29839521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11888 (or 11859 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 29839521 is about 5462.5562697331. The cubic root of 29839521 is about 310.1682090931.

The spelling of 29839521 in words is "twenty-nine million, eight hundred thirty-nine thousand, five hundred twenty-one".