49996665 has 24 divisors (see below), whose sum is σ = 87464520. Its totient is φ = 26417664.

The previous prime is 49996663. The next prime is 49996679. The reversal of 49996665 is 56669994.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12981609 + 37015056 = 3603^2 + 6084^2 .

It is not a de Polignac number, because 49996665 - 2¹ = 49996663 is a prime.

It is a super-2 number, since 2×49996665² = 4999333022244450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49996663) 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 23 ways as a sum of consecutive naturals, for example, 192 + ... + 10001.

It is an arithmetic number, because the mean of its divisors is an integer number (3644355).

Almost surely, 2^49996665 is an apocalyptic number.

49996665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

49996665 is a deficient number, since it is larger than the sum of its proper divisors (37467855).

49996665 is a wasteful number, since it uses less digits than its factorization.

49996665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10313 (or 10310 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 54.

The square root of 49996665 is about 7070.8319878215. The cubic root of 49996665 is about 368.3949588519.

It can be divided in two parts, 4999 and 6665, that added together give a square (11664 = 108²).

The spelling of 49996665 in words is "forty-nine million, nine hundred ninety-six thousand, six hundred sixty-five".