29905901 has 2 divisors, whose sum is σ = 29905902. Its totient is φ = 29905900.

The previous prime is 29905891. The next prime is 29905903. The reversal of 29905901 is 10950992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29702500 + 203401 = 5450^2 + 451^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29905901 is a prime.

Together with 29905903, 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 (29905903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14952950 + 14952951.

It is an arithmetic number, because the mean of its divisors is an integer number (14952951).

Almost surely, 2^29905901 is an apocalyptic number.

It is an amenable number.

29905901 is a deficient number, since it is larger than the sum of its proper divisors (1).

29905901 is an equidigital number, since it uses as much as digits as its factorization.

29905901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 29905901 is about 5468.6288043713. The cubic root of 29905901 is about 310.3980353626.

The spelling of 29905901 in words is "twenty-nine million, nine hundred five thousand, nine hundred one".