49999973 has 6 divisors (see below), whose sum is σ = 51784434. Its totient is φ = 48275024.

The previous prime is 49999921. The next prime is 49999991. The reversal of 49999973 is 37999994.

It can be written as a sum of positive squares in 3 ways, for example, as 15507844 + 34492129 = 3938^2 + 5873^2 .

It is not a de Polignac number, because 49999973 - 2¹⁴ = 49983589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49999903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28886 + ... + 30567.

It is an arithmetic number, because the mean of its divisors is an integer number (8630739).

Almost surely, 2^49999973 is an apocalyptic number.

It is an amenable number.

49999973 is a deficient number, since it is larger than the sum of its proper divisors (1784461).

49999973 is an equidigital number, since it uses as much as digits as its factorization.

49999973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59511 (or 59482 counting only the distinct ones).

The product of its digits is 4960116, while the sum is 59.

The square root of 49999973 is about 7071.0659026769. The cubic root of 49999973 is about 368.4030835515.

The spelling of 49999973 in words is "forty-nine million, nine hundred ninety-nine thousand, nine hundred seventy-three".