29990909 has 12 divisors (see below), whose sum is σ = 33238656. Its totient is φ = 27033552.

The previous prime is 29990903. The next prime is 29990927. The reversal of 29990909 is 90909992.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-29990909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29990903) 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, 5204 + ... + 9330.

It is an arithmetic number, because the mean of its divisors is an integer number (2769888).

Almost surely, 2^29990909 is an apocalyptic number.

It is an amenable number.

29990909 is a deficient number, since it is larger than the sum of its proper divisors (3247747).

29990909 is a wasteful number, since it uses less digits than its factorization.

29990909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4196 (or 4183 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 47.

The square root of 29990909 is about 5476.3956212093. The cubic root of 29990909 is about 310.6918609237.

The spelling of 29990909 in words is "twenty-nine million, nine hundred ninety thousand, nine hundred nine".