49997189 has 32 divisors (see below), whose sum is σ = 60739200. Its totient is φ = 40642560.

The previous prime is 49997161. The next prime is 49997201. The reversal of 49997189 is 98179994.

It is a cyclic number.

It is not a de Polignac number, because 49997189 - 2¹⁶ = 49931653 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49997159) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 442397 + ... + 442509.

It is an arithmetic number, because the mean of its divisors is an integer number (1898100).

Almost surely, 2^49997189 is an apocalyptic number.

It is an amenable number.

49997189 is a deficient number, since it is larger than the sum of its proper divisors (10742011).

49997189 is a wasteful number, since it uses less digits than its factorization.

49997189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245.

The product of its digits is 1469664, while the sum is 56.

The square root of 49997189 is about 7070.8690413555. The cubic root of 49997189 is about 368.3962458596.

The spelling of 49997189 in words is "forty-nine million, nine hundred ninety-seven thousand, one hundred eighty-nine".