49998840 has 64 divisors (see below), whose sum is σ = 154064160. Its totient is φ = 12971520.

The previous prime is 49998827. The next prime is 49998841. The reversal of 49998840 is 4889994.

It is a zygodrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49998841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1191 + ... + 10070.

Almost surely, 2^49998840 is an apocalyptic number.

49998840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49998840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77032080).

49998840 is an abundant number, since it is smaller than the sum of its proper divisors (104065320).

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

49998840 is a wasteful number, since it uses less digits than its factorization.

49998840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11312 (or 11308 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 49998840 is about 7070.9857870031. The cubic root of 49998840 is about 368.4003008576.

The spelling of 49998840 in words is "forty-nine million, nine hundred ninety-eight thousand, eight hundred forty".