49999860 has 72 divisors (see below), whose sum is σ = 152454120. Its totient is φ = 13264128.

The previous prime is 49999853. The next prime is 49999877. The reversal of 49999860 is 6899994.

It is a happy number.

49999860 is a `hidden beast` number, since 499 + 9 + 98 + 60 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4112784 + 45887076 = 2028^2 + 6774^2 .

It is a junction number, because it is equal to n+sod(n) for n = 49999797 and 49999806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40614 + ... + 41826.

Almost surely, 2^49999860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49999860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76227060).

49999860 is an abundant number, since it is smaller than the sum of its proper divisors (102454260).

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

49999860 is a wasteful number, since it uses less digits than its factorization.

49999860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457 (or 1452 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The square root of 49999860 is about 7071.0579123636. The cubic root of 49999860 is about 368.4028060208.

The spelling of 49999860 in words is "forty-nine million, nine hundred ninety-nine thousand, eight hundred sixty".