49999660 has 12 divisors (see below), whose sum is σ = 104999328. Its totient is φ = 19999856.

The previous prime is 49999643. The next prime is 49999667. The reversal of 49999660 is 6699994.

It is a junction number, because it is equal to n+sod(n) for n = 49999598 and 49999607.

It is not an unprimeable number, because it can be changed into a prime (49999667) by changing a digit.

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, 1249972 + ... + 1250011.

It is an arithmetic number, because the mean of its divisors is an integer number (8749944).

Almost surely, 2^49999660 is an apocalyptic number.

It is an amenable number.

49999660 is an abundant number, since it is smaller than the sum of its proper divisors (54999668).

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

49999660 is a wasteful number, since it uses less digits than its factorization.

49999660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499992 (or 2499990 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 52.

The square root of 49999660 is about 7071.0437701940. The cubic root of 49999660 is about 368.4023148150.

The spelling of 49999660 in words is "forty-nine million, nine hundred ninety-nine thousand, six hundred sixty".