49487989 has 8 divisors (see below), whose sum is σ = 52286240. Its totient is φ = 46709136.

The previous prime is 49487987. The next prime is 49488017. The reversal of 49487989 is 98978494.

49487989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49487989 - 2¹ = 49487987 is a prime.

It is a super-2 number, since 2×49487989² = 4898122110528242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49487987) 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 7 ways as a sum of consecutive naturals, for example, 562 + ... + 9964.

It is an arithmetic number, because the mean of its divisors is an integer number (6535780).

Almost surely, 2^49487989 is an apocalyptic number.

It is an amenable number.

49487989 is a deficient number, since it is larger than the sum of its proper divisors (2798251).

49487989 is a wasteful number, since it uses less digits than its factorization.

49487989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9699.

The product of its digits is 5225472, while the sum is 58.

The square root of 49487989 is about 7034.7700033477. The cubic root of 49487989 is about 367.1413231166.

The spelling of 49487989 in words is "forty-nine million, four hundred eighty-seven thousand, nine hundred eighty-nine".