29670397 has 2 divisors, whose sum is σ = 29670398. Its totient is φ = 29670396.

The previous prime is 29670383. The next prime is 29670409. The reversal of 29670397 is 79307692.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19263321 + 10407076 = 4389^2 + 3226^2 .

It is a cyclic number.

It is not a de Polignac number, because 29670397 - 2⁷ = 29670269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29670497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14835198 + 14835199.

It is an arithmetic number, because the mean of its divisors is an integer number (14835199).

Almost surely, 2^29670397 is an apocalyptic number.

It is an amenable number.

29670397 is a deficient number, since it is larger than the sum of its proper divisors (1).

29670397 is an equidigital number, since it uses as much as digits as its factorization.

29670397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142884, while the sum is 43.

The square root of 29670397 is about 5447.0539743975. The cubic root of 29670397 is about 309.5811095635.

The spelling of 29670397 in words is "twenty-nine million, six hundred seventy thousand, three hundred ninety-seven".