29904991 has 8 divisors (see below), whose sum is σ = 32049504. Its totient is φ = 27830880.

The previous prime is 29904977. The next prime is 29904997. The reversal of 29904991 is 19940992.

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

It is a cyclic number.

It is not a de Polignac number, because 29904991 - 2¹³ = 29896799 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 (29904997) 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, 16720 + ... + 18421.

It is an arithmetic number, because the mean of its divisors is an integer number (4006188).

Almost surely, 2^29904991 is an apocalyptic number.

29904991 is a deficient number, since it is larger than the sum of its proper divisors (2144513).

29904991 is a wasteful number, since it uses less digits than its factorization.

29904991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35201.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 29904991 is about 5468.5456018945. The cubic root of 29904991 is about 310.3948869864.

The spelling of 29904991 in words is "twenty-nine million, nine hundred four thousand, nine hundred ninety-one".