49387213 has 4 divisors (see below), whose sum is σ = 51986560. Its totient is φ = 46787868.

The previous prime is 49387211. The next prime is 49387229. The reversal of 49387213 is 31278394.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49387213 - 2¹ = 49387211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49387211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1299645 + ... + 1299682.

It is an arithmetic number, because the mean of its divisors is an integer number (12996640).

Almost surely, 2^49387213 is an apocalyptic number.

It is an amenable number.

49387213 is a deficient number, since it is larger than the sum of its proper divisors (2599347).

49387213 is a wasteful number, since it uses less digits than its factorization.

49387213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2599346.

The product of its digits is 36288, while the sum is 37.

The square root of 49387213 is about 7027.6036456249. The cubic root of 49387213 is about 366.8919415475.

The spelling of 49387213 in words is "forty-nine million, three hundred eighty-seven thousand, two hundred thirteen".