49259809 has 4 divisors (see below), whose sum is σ = 49813380. Its totient is φ = 48706240.

The previous prime is 49259803. The next prime is 49259827. The reversal of 49259809 is 90895294.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4410000 + 44849809 = 2100^2 + 6697^2 .

It is a cyclic number.

It is not a de Polignac number, because 49259809 - 2¹³ = 49251617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49259803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276652 + ... + 276829.

It is an arithmetic number, because the mean of its divisors is an integer number (12453345).

Almost surely, 2^49259809 is an apocalyptic number.

It is an amenable number.

49259809 is a deficient number, since it is larger than the sum of its proper divisors (553571).

49259809 is an equidigital number, since it uses as much as digits as its factorization.

49259809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553570.

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 49259809 is about 7018.5332513282. The cubic root of 49259809 is about 366.5761799670.

The spelling of 49259809 in words is "forty-nine million, two hundred fifty-nine thousand, eight hundred nine".