49879823 has 4 divisors (see below), whose sum is σ = 57005520. Its totient is φ = 42754128.

The previous prime is 49879789. The next prime is 49879829. The reversal of 49879823 is 32897894.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32897894 = 2 ⋅16448947.

It is a cyclic number.

It is not a de Polignac number, because 49879823 - 2⁸ = 49879567 is a prime.

It is a super-2 number, since 2×49879823² = 4975993485022658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49879829) 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, 3562838 + ... + 3562851.

It is an arithmetic number, because the mean of its divisors is an integer number (14251380).

Almost surely, 2^49879823 is an apocalyptic number.

49879823 is a deficient number, since it is larger than the sum of its proper divisors (7125697).

49879823 is an equidigital number, since it uses as much as digits as its factorization.

49879823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7125696.

The product of its digits is 870912, while the sum is 50.

The square root of 49879823 is about 7062.5649023567. The cubic root of 49879823 is about 368.1077558381.

The spelling of 49879823 in words is "forty-nine million, eight hundred seventy-nine thousand, eight hundred twenty-three".