49439237 has 4 divisors (see below), whose sum is σ = 49617996. Its totient is φ = 49260480.

The previous prime is 49439231. The next prime is 49439249. The reversal of 49439237 is 73293494.

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 16273156 + 33166081 = 4034^2 + 5759^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49439237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49439194 and 49439203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49439231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88964 + ... + 89517.

It is an arithmetic number, because the mean of its divisors is an integer number (12404499).

It is a Poulet number, since it divides 2^49439236-1.

Almost surely, 2^49439237 is an apocalyptic number.

It is an amenable number.

49439237 is a deficient number, since it is larger than the sum of its proper divisors (178759).

49439237 is a wasteful number, since it uses less digits than its factorization.

49439237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178758.

The product of its digits is 163296, while the sum is 41.

The square root of 49439237 is about 7031.3040753476. The cubic root of 49439237 is about 367.0207231156.

The spelling of 49439237 in words is "forty-nine million, four hundred thirty-nine thousand, two hundred thirty-seven".