49389409 has 2 divisors, whose sum is σ = 49389410. Its totient is φ = 49389408.

The previous prime is 49389401. The next prime is 49389419. The reversal of 49389409 is 90498394.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37638225 + 11751184 = 6135^2 + 3428^2 .

It is a cyclic number.

It is not a de Polignac number, because 49389409 - 2³ = 49389401 is a prime.

It is not a weakly prime, because it can be changed into another prime (49389401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24694704 + 24694705.

It is an arithmetic number, because the mean of its divisors is an integer number (24694705).

Almost surely, 2^49389409 is an apocalyptic number.

It is an amenable number.

49389409 is a deficient number, since it is larger than the sum of its proper divisors (1).

49389409 is an equidigital number, since it uses as much as digits as its factorization.

49389409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 49389409 is about 7027.7598849135. The cubic root of 49389409 is about 366.8973794110.

The spelling of 49389409 in words is "forty-nine million, three hundred eighty-nine thousand, four hundred nine".