49998678 has 8 divisors (see below), whose sum is σ = 99997368. Its totient is φ = 16666224.

The previous prime is 49998661. The next prime is 49998727. The reversal of 49998678 is 87689994.

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

49998678 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4166551 + ... + 4166562.

It is an arithmetic number, because the mean of its divisors is an integer number (12499671).

Almost surely, 2^49998678 is an apocalyptic number.

49998678 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

49998678 is a wasteful number, since it uses less digits than its factorization.

49998678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8333118.

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

The square root of 49998678 is about 7070.9743317311. The cubic root of 49998678 is about 368.3999029757.

The spelling of 49998678 in words is "forty-nine million, nine hundred ninety-eight thousand, six hundred seventy-eight".