49291789 has 4 divisors (see below), whose sum is σ = 52191324. Its totient is φ = 46392256.

The previous prime is 49291787. The next prime is 49291817. The reversal of 49291789 is 98719294.

49291789 = 958² + 959² + ... + 1008².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98719294 = 2 ⋅49359647.

It can be written as a sum of positive squares in 2 ways, for example, as 22944100 + 26347689 = 4790^2 + 5133^2 .

It is a cyclic number.

It is not a de Polignac number, because 49291789 - 2¹ = 49291787 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49291787) 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, 1449742 + ... + 1449775.

It is an arithmetic number, because the mean of its divisors is an integer number (13047831).

Almost surely, 2^49291789 is an apocalyptic number.

It is an amenable number.

49291789 is a deficient number, since it is larger than the sum of its proper divisors (2899535).

49291789 is a wasteful number, since it uses less digits than its factorization.

49291789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2899534.

The product of its digits is 326592, while the sum is 49.

The square root of 49291789 is about 7020.8111354743. The cubic root of 49291789 is about 366.6554912113.

The spelling of 49291789 in words is "forty-nine million, two hundred ninety-one thousand, seven hundred eighty-nine".