49339809 has 12 divisors (see below), whose sum is σ = 71371300. Its totient is φ = 32845824.

The previous prime is 49339799. The next prime is 49339819. The reversal of 49339809 is 90893394.

It is an interprime number because it is at equal distance from previous prime (49339799) and next prime (49339819).

It can be written as a sum of positive squares in 2 ways, for example, as 25280784 + 24059025 = 5028^2 + 4905^2 .

It is not a de Polignac number, because 49339809 - 2⁴ = 49339793 is a prime.

It is a super-3 number, since 3×49339809³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49339819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3357 + ... + 10485.

Almost surely, 2^49339809 is an apocalyptic number.

It is an amenable number.

49339809 is a deficient number, since it is larger than the sum of its proper divisors (22031491).

49339809 is a wasteful number, since it uses less digits than its factorization.

49339809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7904 (or 7901 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 49339809 is about 7024.2301357515. The cubic root of 49339809 is about 366.7745176768.

The spelling of 49339809 in words is "forty-nine million, three hundred thirty-nine thousand, eight hundred nine".