49642889 has 4 divisors (see below), whose sum is σ = 50271360. Its totient is φ = 49014420.

The previous prime is 49642871. The next prime is 49642897. The reversal of 49642889 is 98824694.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-49642889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49642819) 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, 314117 + ... + 314274.

It is an arithmetic number, because the mean of its divisors is an integer number (12567840).

Almost surely, 2^49642889 is an apocalyptic number.

It is an amenable number.

49642889 is a deficient number, since it is larger than the sum of its proper divisors (628471).

49642889 is an equidigital number, since it uses as much as digits as its factorization.

49642889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628470.

The product of its digits is 995328, while the sum is 50.

The square root of 49642889 is about 7045.7710011041. The cubic root of 49642889 is about 367.5239813434.

The spelling of 49642889 in words is "forty-nine million, six hundred forty-two thousand, eight hundred eighty-nine".