49387239 has 30 divisors (see below), whose sum is σ = 81108720. Its totient is φ = 29925720.

The previous prime is 49387237. The next prime is 49387243. The reversal of 49387239 is 93278394.

It is a happy number.

It is not a de Polignac number, because 49387239 - 2¹ = 49387237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 49387194 and 49387203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49387231) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 7282 + ... + 12320.

It is an arithmetic number, because the mean of its divisors is an integer number (2703624).

Almost surely, 2^49387239 is an apocalyptic number.

49387239 is a deficient number, since it is larger than the sum of its proper divisors (31721481).

49387239 is a wasteful number, since it uses less digits than its factorization.

49387239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5073 (or 5053 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 49387239 is about 7027.6054954728. The cubic root of 49387239 is about 366.8920059312.

The spelling of 49387239 in words is "forty-nine million, three hundred eighty-seven thousand, two hundred thirty-nine".