49629821 has 4 divisors (see below), whose sum is σ = 49644000. Its totient is φ = 49615644.

The previous prime is 49629799. The next prime is 49629823. The reversal of 49629821 is 12892694.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12892694 = 2 ⋅6446347.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49629821 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 (49629823) 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, 2360 + ... + 10238.

It is an arithmetic number, because the mean of its divisors is an integer number (12411000).

Almost surely, 2^49629821 is an apocalyptic number.

It is an amenable number.

49629821 is a deficient number, since it is larger than the sum of its proper divisors (14179).

49629821 is an equidigital number, since it uses as much as digits as its factorization.

49629821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14178.

The product of its digits is 62208, while the sum is 41.

The square root of 49629821 is about 7044.8435752684. The cubic root of 49629821 is about 367.4917294944.

The spelling of 49629821 in words is "forty-nine million, six hundred twenty-nine thousand, eight hundred twenty-one".