49722689 has 4 divisors (see below), whose sum is σ = 49837956. Its totient is φ = 49607424.

The previous prime is 49722653. The next prime is 49722697. The reversal of 49722689 is 98622794.

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 2002225 + 47720464 = 1415^2 + 6908^2 .

It is a cyclic number.

It is not a de Polignac number, because 49722689 - 2¹² = 49718593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49722089) 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, 56984 + ... + 57849.

It is an arithmetic number, because the mean of its divisors is an integer number (12459489).

Almost surely, 2^49722689 is an apocalyptic number.

It is an amenable number.

49722689 is a deficient number, since it is larger than the sum of its proper divisors (115267).

49722689 is a wasteful number, since it uses less digits than its factorization.

49722689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115266.

The product of its digits is 435456, while the sum is 47.

The square root of 49722689 is about 7051.4316985985. The cubic root of 49722689 is about 367.7208051878.

The spelling of 49722689 in words is "forty-nine million, seven hundred twenty-two thousand, six hundred eighty-nine".