29990117 has 4 divisors (see below), whose sum is σ = 30003660. Its totient is φ = 29976576.

The previous prime is 29990111. The next prime is 29990119. The reversal of 29990117 is 71109992.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24462916 + 5527201 = 4946^2 + 2351^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29990117 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 (29990111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2588 + ... + 8165.

It is an arithmetic number, because the mean of its divisors is an integer number (7500915).

Almost surely, 2^29990117 is an apocalyptic number.

It is an amenable number.

29990117 is a deficient number, since it is larger than the sum of its proper divisors (13543).

29990117 is a wasteful number, since it uses less digits than its factorization.

29990117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13542.

The product of its (nonzero) digits is 10206, while the sum is 38.

The square root of 29990117 is about 5476.3233103972. The cubic root of 29990117 is about 310.6891259825.

The spelling of 29990117 in words is "twenty-nine million, nine hundred ninety thousand, one hundred seventeen".