49798409 has 2 divisors, whose sum is σ = 49798410. Its totient is φ = 49798408.

The previous prime is 49798379. The next prime is 49798447. The reversal of 49798409 is 90489794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48260809 + 1537600 = 6947^2 + 1240^2 .

It is a cyclic number.

It is not a de Polignac number, because 49798409 - 2²⁴ = 33021193 is a prime.

It is not a weakly prime, because it can be changed into another prime (49798459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24899204 + 24899205.

It is an arithmetic number, because the mean of its divisors is an integer number (24899205).

Almost surely, 2^49798409 is an apocalyptic number.

It is an amenable number.

49798409 is a deficient number, since it is larger than the sum of its proper divisors (1).

49798409 is an equidigital number, since it uses as much as digits as its factorization.

49798409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 49798409 is about 7056.7987784831. The cubic root of 49798409 is about 367.9073712399.

The spelling of 49798409 in words is "forty-nine million, seven hundred ninety-eight thousand, four hundred nine".