29899121 has 8 divisors (see below), whose sum is σ = 34639104. Its totient is φ = 25276320.

The previous prime is 29899099. The next prime is 29899157. The reversal of 29899121 is 12199892.

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 29899121 - 2¹⁰ = 29898097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29899321) 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, 28745 + ... + 29766.

It is an arithmetic number, because the mean of its divisors is an integer number (4329888).

Almost surely, 2^29899121 is an apocalyptic number.

It is an amenable number.

29899121 is a deficient number, since it is larger than the sum of its proper divisors (4739983).

29899121 is an equidigital number, since it uses as much as digits as its factorization.

29899121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58591.

The product of its digits is 23328, while the sum is 41.

The square root of 29899121 is about 5468.0088697807. The cubic root of 29899121 is about 310.3745766954.

The spelling of 29899121 in words is "twenty-nine million, eight hundred ninety-nine thousand, one hundred twenty-one".