49281409 has 2 divisors, whose sum is σ = 49281410. Its totient is φ = 49281408.

The previous prime is 49281391. The next prime is 49281431. The reversal of 49281409 is 90418294.

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., 39690000 + 9591409 = 6300^2 + 3097^2 .

It is a cyclic number.

It is not a de Polignac number, because 49281409 - 2⁵ = 49281377 is a prime.

It is not a weakly prime, because it can be changed into another prime (49281209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24640704 + 24640705.

It is an arithmetic number, because the mean of its divisors is an integer number (24640705).

Almost surely, 2^49281409 is an apocalyptic number.

It is an amenable number.

49281409 is a deficient number, since it is larger than the sum of its proper divisors (1).

49281409 is an equidigital number, since it uses as much as digits as its factorization.

49281409 is an evil number, because the sum of its binary digits is even.

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

The square root of 49281409 is about 7020.0718657290. The cubic root of 49281409 is about 366.6297522984.

The spelling of 49281409 in words is "forty-nine million, two hundred eighty-one thousand, four hundred nine".