49209849 has 40 divisors (see below), whose sum is σ = 83853000. Its totient is φ = 28491264.

The previous prime is 49209847. The next prime is 49209869. The reversal of 49209849 is 94890294.

It can be written as a sum of positive squares in 4 ways, for example, as 810000 + 48399849 = 900^2 + 6957^2 .

It is not a de Polignac number, because 49209849 - 2¹ = 49209847 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49209847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16527 + ... + 19275.

It is an arithmetic number, because the mean of its divisors is an integer number (2096325).

Almost surely, 2^49209849 is an apocalyptic number.

It is an amenable number.

49209849 is a deficient number, since it is larger than the sum of its proper divisors (34643151).

49209849 is a wasteful number, since it uses less digits than its factorization.

49209849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791 (or 2782 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 49209849 is about 7014.9732002339. The cubic root of 49209849 is about 366.4522091187.

The spelling of 49209849 in words is "forty-nine million, two hundred nine thousand, eight hundred forty-nine".