49621823 has 4 divisors (see below), whose sum is σ = 50301648. Its totient is φ = 48942000.

The previous prime is 49621807. The next prime is 49621841. The reversal of 49621823 is 32812694.

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 49621823 - 2⁴ = 49621807 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 (49621123) 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, 339803 + ... + 339948.

It is an arithmetic number, because the mean of its divisors is an integer number (12575412).

Almost surely, 2^49621823 is an apocalyptic number.

49621823 is a deficient number, since it is larger than the sum of its proper divisors (679825).

49621823 is an equidigital number, since it uses as much as digits as its factorization.

49621823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679824.

The product of its digits is 20736, while the sum is 35.

The square root of 49621823 is about 7044.2759031713. The cubic root of 49621823 is about 367.4719876222.

The spelling of 49621823 in words is "forty-nine million, six hundred twenty-one thousand, eight hundred twenty-three".