29939904 has 84 divisors (see below), whose sum is σ = 87370920. Its totient is φ = 9799680.

The previous prime is 29939891. The next prime is 29939909. The reversal of 29939904 is 40993992.

It is a self number, because there is not a number n which added to its sum of digits gives 29939904.

It is not an unprimeable number, because it can be changed into a prime (29939909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33544 + ... + 34424.

It is an arithmetic number, because the mean of its divisors is an integer number (1040130).

Almost surely, 2^29939904 is an apocalyptic number.

29939904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29939904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43685460).

29939904 is an abundant number, since it is smaller than the sum of its proper divisors (57431016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29939904 is a wasteful number, since it uses less digits than its factorization.

29939904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958 (or 945 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 29939904 is about 5471.7368357771. The cubic root of 29939904 is about 310.5156316276.

The spelling of 29939904 in words is "twenty-nine million, nine hundred thirty-nine thousand, nine hundred four".