29908157 has 2 divisors, whose sum is σ = 29908158. Its totient is φ = 29908156.

The previous prime is 29908141. The next prime is 29908159. The reversal of 29908157 is 75180992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22477081 + 7431076 = 4741^2 + 2726^2 .

It is a cyclic number.

It is not a de Polignac number, because 29908157 - 2⁴ = 29908141 is a prime.

Together with 29908159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29908159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14954078 + 14954079.

It is an arithmetic number, because the mean of its divisors is an integer number (14954079).

Almost surely, 2^29908157 is an apocalyptic number.

It is an amenable number.

29908157 is a deficient number, since it is larger than the sum of its proper divisors (1).

29908157 is an equidigital number, since it uses as much as digits as its factorization.

29908157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 29908157 is about 5468.8350679098. The cubic root of 29908157 is about 310.4058402923.

The spelling of 29908157 in words is "twenty-nine million, nine hundred eight thousand, one hundred fifty-seven".