49787197 has 4 divisors (see below), whose sum is σ = 49926240. Its totient is φ = 49648156.

The previous prime is 49787191. The next prime is 49787233. The reversal of 49787197 is 79178794.

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 a de Polignac number, because none of the positive numbers 2^k-49787197 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 (49787191) 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, 68983 + ... + 69700.

It is an arithmetic number, because the mean of its divisors is an integer number (12481560).

Almost surely, 2^49787197 is an apocalyptic number.

It is an amenable number.

49787197 is a deficient number, since it is larger than the sum of its proper divisors (139043).

49787197 is a wasteful number, since it uses less digits than its factorization.

49787197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139042.

The product of its digits is 889056, while the sum is 52.

The square root of 49787197 is about 7056.0043225610. The cubic root of 49787197 is about 367.8797579945.

The spelling of 49787197 in words is "forty-nine million, seven hundred eighty-seven thousand, one hundred ninety-seven".