49998891 has 8 divisors (see below), whose sum is σ = 66712464. Its totient is φ = 33308960.

The previous prime is 49998869. The next prime is 49998911. The reversal of 49998891 is 19889994.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 49998891 - 2⁶ = 49998827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49998811) 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, 180 + ... + 10001.

It is an arithmetic number, because the mean of its divisors is an integer number (8339058).

Almost surely, 2^49998891 is an apocalyptic number.

49998891 is a deficient number, since it is larger than the sum of its proper divisors (16713573).

49998891 is a wasteful number, since it uses less digits than its factorization.

49998891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11821.

The product of its digits is 1679616, while the sum is 57.

The square root of 49998891 is about 7070.9893932886. The cubic root of 49998891 is about 368.4004261166.

The spelling of 49998891 in words is "forty-nine million, nine hundred ninety-eight thousand, eight hundred ninety-one".