49189509 has 12 divisors (see below), whose sum is σ = 71123052. Its totient is φ = 32760000.

The previous prime is 49189507. The next prime is 49189523. The reversal of 49189509 is 90598194.

49189509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 956484 + 48233025 = 978^2 + 6945^2 .

It is not a de Polignac number, because 49189509 - 2¹ = 49189507 is a prime.

It is a super-2 number, since 2×49189509² = 4839215591322162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49189501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9609 + ... + 13809.

It is an arithmetic number, because the mean of its divisors is an integer number (5926921).

Almost surely, 2^49189509 is an apocalyptic number.

It is an amenable number.

49189509 is a deficient number, since it is larger than the sum of its proper divisors (21933543).

49189509 is a wasteful number, since it uses less digits than its factorization.

49189509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5508 (or 5505 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 49189509 is about 7013.5232943222. The cubic root of 49189509 is about 366.4017133659.

It can be divided in two parts, 491 and 89509, that added together give a square (90000 = 300²).

The spelling of 49189509 in words is "forty-nine million, one hundred eighty-nine thousand, five hundred nine".