29972289 has 16 divisors (see below), whose sum is σ = 42390144. Its totient is φ = 18796800.

The previous prime is 29972281. The next prime is 29972311. The reversal of 29972289 is 98227992.

It is a happy number.

It is not a de Polignac number, because 29972289 - 2³ = 29972281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29972281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 649 + ... + 7769.

It is an arithmetic number, because the mean of its divisors is an integer number (2649384).

Almost surely, 2^29972289 is an apocalyptic number.

It is an amenable number.

29972289 is a deficient number, since it is larger than the sum of its proper divisors (12417855).

29972289 is a wasteful number, since it uses less digits than its factorization.

29972289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7208.

The product of its digits is 326592, while the sum is 48.

The square root of 29972289 is about 5474.6953339889. The cubic root of 29972289 is about 310.6275494341.

The spelling of 29972289 in words is "twenty-nine million, nine hundred seventy-two thousand, two hundred eighty-nine".