48491639 has 8 divisors (see below), whose sum is σ = 56598528. Its totient is φ = 40679640.

The previous prime is 48491617. The next prime is 48491647. The reversal of 48491639 is 93619484.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48491639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 48491639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48491689) 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 7 ways as a sum of consecutive naturals, for example, 73367 + ... + 74024.

It is an arithmetic number, because the mean of its divisors is an integer number (7074816).

Almost surely, 2^48491639 is an apocalyptic number.

48491639 is a deficient number, since it is larger than the sum of its proper divisors (8106889).

48491639 is a wasteful number, since it uses less digits than its factorization.

48491639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147445.

The product of its digits is 186624, while the sum is 44.

The square root of 48491639 is about 6963.5938279024. The cubic root of 48491639 is about 364.6606942478.

The spelling of 48491639 in words is "forty-eight million, four hundred ninety-one thousand, six hundred thirty-nine".