49217289 has 32 divisors (see below), whose sum is σ = 74265984. Its totient is φ = 28730880.

The previous prime is 49217249. The next prime is 49217291. The reversal of 49217289 is 98271294.

It is not a de Polignac number, because 49217289 - 2⁹ = 49216777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49217289.

It is not an unprimeable number, because it can be changed into a prime (49217219) 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 31 ways as a sum of consecutive naturals, for example, 211117 + ... + 211349.

It is an arithmetic number, because the mean of its divisors is an integer number (2320812).

Almost surely, 2^49217289 is an apocalyptic number.

It is an amenable number.

49217289 is a deficient number, since it is larger than the sum of its proper divisors (25048695).

49217289 is a wasteful number, since it uses less digits than its factorization.

49217289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457.

The product of its digits is 72576, while the sum is 42.

The square root of 49217289 is about 7015.5034744486. The cubic root of 49217289 is about 366.4706760659.

The spelling of 49217289 in words is "forty-nine million, two hundred seventeen thousand, two hundred eighty-nine".