49205749 has 4 divisors (see below), whose sum is σ = 49388940. Its totient is φ = 49022560.

The previous prime is 49205747. The next prime is 49205753. The reversal of 49205749 is 94750294.

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 12215025 + 36990724 = 3495^2 + 6082^2 .

It is not a de Polignac number, because 49205749 - 2¹ = 49205747 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49205747) 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 3 ways as a sum of consecutive naturals, for example, 91192 + ... + 91729.

It is an arithmetic number, because the mean of its divisors is an integer number (12347235).

Almost surely, 2^49205749 is an apocalyptic number.

It is an amenable number.

49205749 is a deficient number, since it is larger than the sum of its proper divisors (183191).

49205749 is a wasteful number, since it uses less digits than its factorization.

49205749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183190.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 49205749 is about 7014.6809620966. The cubic root of 49205749 is about 366.4420316453.

The spelling of 49205749 in words is "forty-nine million, two hundred five thousand, seven hundred forty-nine".