49821423 has 4 divisors (see below), whose sum is σ = 66428568. Its totient is φ = 33214280.

The previous prime is 49821419. The next prime is 49821451. The reversal of 49821423 is 32412894.

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

It is a cyclic number.

It is not a de Polignac number, because 49821423 - 2² = 49821419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49821523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8303568 + ... + 8303573.

It is an arithmetic number, because the mean of its divisors is an integer number (16607142).

Almost surely, 2^49821423 is an apocalyptic number.

49821423 is a deficient number, since it is larger than the sum of its proper divisors (16607145).

49821423 is a wasteful number, since it uses less digits than its factorization.

49821423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16607144.

The product of its digits is 13824, while the sum is 33.

The square root of 49821423 is about 7058.4292161925. The cubic root of 49821423 is about 367.9640378177.

The spelling of 49821423 in words is "forty-nine million, eight hundred twenty-one thousand, four hundred twenty-three".