29117899 has 12 divisors (see below), whose sum is σ = 31150560. Its totient is φ = 27209520.

The previous prime is 29117887. The next prime is 29117903. The reversal of 29117899 is 99871192.

It is a happy number.

It is not a de Polignac number, because 29117899 - 2¹⁵ = 29085131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29111899) 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, 28009 + ... + 29029.

It is an arithmetic number, because the mean of its divisors is an integer number (2595880).

Almost surely, 2^29117899 is an apocalyptic number.

29117899 is a deficient number, since it is larger than the sum of its proper divisors (2032661).

29117899 is a wasteful number, since it uses less digits than its factorization.

29117899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138 (or 1119 counting only the distinct ones).

The product of its digits is 81648, while the sum is 46.

The square root of 29117899 is about 5396.1003511795. The cubic root of 29117899 is about 307.6474679899.

The spelling of 29117899 in words is "twenty-nine million, one hundred seventeen thousand, eight hundred ninety-nine".