29912397 has 8 divisors (see below), whose sum is σ = 41617344. Its totient is φ = 19074528.

The previous prime is 29912359. The next prime is 29912413. The reversal of 29912397 is 79321992.

It is a happy number.

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

It is not a de Polignac number, because 29912397 - 2⁷ = 29912269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29912347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216688 + ... + 216825.

It is an arithmetic number, because the mean of its divisors is an integer number (5202168).

Almost surely, 2^29912397 is an apocalyptic number.

It is an amenable number.

29912397 is a deficient number, since it is larger than the sum of its proper divisors (11704947).

29912397 is a wasteful number, since it uses less digits than its factorization.

29912397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433539.

The product of its digits is 61236, while the sum is 42.

The square root of 29912397 is about 5469.2227052845. Note that the first 3 decimals coincide. The cubic root of 29912397 is about 310.4205080697.

The spelling of 29912397 in words is "twenty-nine million, nine hundred twelve thousand, three hundred ninety-seven".