48139989 has 8 divisors (see below), whose sum is σ = 66977472. Its totient is φ = 30697920.

The previous prime is 48139967. The next prime is 48140017. The reversal of 48139989 is 98993184.

It is a happy number.

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

It is not a de Polignac number, because 48139989 - 2⁵ = 48139957 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 (48139909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348772 + ... + 348909.

It is an arithmetic number, because the mean of its divisors is an integer number (8372184).

Almost surely, 2^48139989 is an apocalyptic number.

It is an amenable number.

48139989 is a deficient number, since it is larger than the sum of its proper divisors (18837483).

48139989 is a wasteful number, since it uses less digits than its factorization.

48139989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697707.

The product of its digits is 559872, while the sum is 51.

The square root of 48139989 is about 6938.2987107792. The cubic root of 48139989 is about 363.7770769041. Note that the first 3 decimals are identical.

It can be divided in two parts, 481 and 39989, that added together give a triangular number (40470 = T₂₈₄).

The spelling of 48139989 in words is "forty-eight million, one hundred thirty-nine thousand, nine hundred eighty-nine".