29148409 has 2 divisors, whose sum is σ = 29148410. Its totient is φ = 29148408.

The previous prime is 29148407. The next prime is 29148437. The reversal of 29148409 is 90484192.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26677225 + 2471184 = 5165^2 + 1572^2 .

It is a cyclic number.

It is not a de Polignac number, because 29148409 - 2¹ = 29148407 is a prime.

Together with 29148407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (29148407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14574204 + 14574205.

It is an arithmetic number, because the mean of its divisors is an integer number (14574205).

Almost surely, 2^29148409 is an apocalyptic number.

It is an amenable number.

29148409 is a deficient number, since it is larger than the sum of its proper divisors (1).

29148409 is an equidigital number, since it uses as much as digits as its factorization.

29148409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 29148409 is about 5398.9266525857. The cubic root of 29148409 is about 307.7548824225.

The spelling of 29148409 in words is "twenty-nine million, one hundred forty-eight thousand, four hundred nine".