29999997 has 16 divisors (see below), whose sum is σ = 44640000. Its totient is φ = 19912032.

The previous prime is 29999989. The next prime is 29999999. The reversal of 29999997 is 79999992.

It is not a de Polignac number, because 29999997 - 2³ = 29999989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29999999) 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, 4129 + ... + 8777.

It is an arithmetic number, because the mean of its divisors is an integer number (2790000).

Almost surely, 2^29999997 is an apocalyptic number.

29999997 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

29999997 is a deficient number, since it is larger than the sum of its proper divisors (14640003).

29999997 is a wasteful number, since it uses less digits than its factorization.

29999997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4897 (or 4891 counting only the distinct ones).

The product of its digits is 7440174, while the sum is 63.

The square root of 29999997 is about 5477.2253011904. The cubic root of 29999997 is about 310.7232402379.

It can be divided in two parts, 2999 and 9997, that added together give a square (12996 = 114²).

The spelling of 29999997 in words is "twenty-nine million, nine hundred ninety-nine thousand, nine hundred ninety-seven".