49720985 has 4 divisors (see below), whose sum is σ = 59665188. Its totient is φ = 39776784.

The previous prime is 49720981. The next prime is 49721033. The reversal of 49720985 is 58902794.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23629321 + 26091664 = 4861^2 + 5108^2 .

It is a cyclic number.

It is not a de Polignac number, because 49720985 - 2² = 49720981 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49720981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4972094 + ... + 4972103.

It is an arithmetic number, because the mean of its divisors is an integer number (14916297).

Almost surely, 2^49720985 is an apocalyptic number.

It is an amenable number.

49720985 is a deficient number, since it is larger than the sum of its proper divisors (9944203).

49720985 is an equidigital number, since it uses as much as digits as its factorization.

49720985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9944202.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 49720985 is about 7051.3108710367. The cubic root of 49720985 is about 367.7166045340.

It can be divided in two parts, 49720 and 985, that added together give a palindrome (50705).

The spelling of 49720985 in words is "forty-nine million, seven hundred twenty thousand, nine hundred eighty-five".