29909885 has 16 divisors (see below), whose sum is σ = 39232512. Its totient is φ = 21792000.

The previous prime is 29909879. The next prime is 29909903. The reversal of 29909885 is 58890992.

It is not a de Polignac number, because 29909885 - 2¹⁶ = 29844349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3041 + ... + 8310.

It is an arithmetic number, because the mean of its divisors is an integer number (2452032).

Almost surely, 2^29909885 is an apocalyptic number.

It is an amenable number.

29909885 is a deficient number, since it is larger than the sum of its proper divisors (9322627).

29909885 is a wasteful number, since it uses less digits than its factorization.

29909885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11404.

The product of its (nonzero) digits is 466560, while the sum is 50.

The square root of 29909885 is about 5468.9930517418. The cubic root of 29909885 is about 310.4118182708.

The spelling of 29909885 in words is "twenty-nine million, nine hundred nine thousand, eight hundred eighty-five".