29991097 has 2 divisors, whose sum is σ = 29991098. Its totient is φ = 29991096.

The previous prime is 29991037. The next prime is 29991109. The reversal of 29991097 is 79019992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22695696 + 7295401 = 4764^2 + 2701^2 .

It is a cyclic number.

It is not a de Polignac number, because 29991097 - 2¹⁵ = 29958329 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (29991037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14995548 + 14995549.

It is an arithmetic number, because the mean of its divisors is an integer number (14995549).

Almost surely, 2^29991097 is an apocalyptic number.

It is an amenable number.

29991097 is a deficient number, since it is larger than the sum of its proper divisors (1).

29991097 is an equidigital number, since it uses as much as digits as its factorization.

29991097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 46.

The square root of 29991097 is about 5476.4127857567. The cubic root of 29991097 is about 310.6925101198.

It can be divided in two parts, 2999 and 1097, that added together give a 12-th power (4096 = 2¹²).

The spelling of 29991097 in words is "twenty-nine million, nine hundred ninety-one thousand, ninety-seven".