49447789 has 4 divisors (see below), whose sum is σ = 49474080. Its totient is φ = 49421500.

The previous prime is 49447771. The next prime is 49447793. The reversal of 49447789 is 98774494.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49447789 - 2⁵ = 49447757 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 (49447729) 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, 10087 + ... + 14164.

It is an arithmetic number, because the mean of its divisors is an integer number (12368520).

Almost surely, 2^49447789 is an apocalyptic number.

It is an amenable number.

49447789 is a deficient number, since it is larger than the sum of its proper divisors (26291).

49447789 is a wasteful number, since it uses less digits than its factorization.

49447789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26290.

The product of its digits is 2032128, while the sum is 52.

The square root of 49447789 is about 7031.9121865962. The cubic root of 49447789 is about 367.0418843124.

The spelling of 49447789 in words is "forty-nine million, four hundred forty-seven thousand, seven hundred eighty-nine".