48636989 has 4 divisors (see below), whose sum is σ = 48776700. Its totient is φ = 48497280.

The previous prime is 48636953. The next prime is 48636997. The reversal of 48636989 is 98963684.

48636989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29888089 + 18748900 = 5467^2 + 4330^2 .

It is a cyclic number.

It is not a de Polignac number, because 48636989 - 2⁸ = 48636733 is a prime.

It is a super-2 number, since 2×48636989² = 4731113397972242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 48636989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48636919) 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 3 ways as a sum of consecutive naturals, for example, 69332 + ... + 70029.

It is an arithmetic number, because the mean of its divisors is an integer number (12194175).

Almost surely, 2^48636989 is an apocalyptic number.

It is an amenable number.

48636989 is a deficient number, since it is larger than the sum of its proper divisors (139711).

48636989 is a wasteful number, since it uses less digits than its factorization.

48636989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139710.

The product of its digits is 2239488, while the sum is 53.

The square root of 48636989 is about 6974.0224404572. The cubic root of 48636989 is about 365.0246783839.

The spelling of 48636989 in words is "forty-eight million, six hundred thirty-six thousand, nine hundred eighty-nine".