49989678 has 16 divisors (see below), whose sum is σ = 103427280. Its totient is φ = 16088576.

The previous prime is 49989671. The next prime is 49989691. The reversal of 49989678 is 87698994.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49989671) 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, 143475 + ... + 143822.

It is an arithmetic number, because the mean of its divisors is an integer number (6464205).

Almost surely, 2^49989678 is an apocalyptic number.

49989678 is an abundant number, since it is smaller than the sum of its proper divisors (53437602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49989678 is a wasteful number, since it uses less digits than its factorization.

49989678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287331.

The product of its digits is 7838208, while the sum is 60.

The square root of 49989678 is about 7070.3378985732. The cubic root of 49989678 is about 368.3777970706.

The spelling of 49989678 in words is "forty-nine million, nine hundred eighty-nine thousand, six hundred seventy-eight".