49921784 has 32 divisors (see below), whose sum is σ = 102394800. Its totient is φ = 22629120.

The previous prime is 49921783. The next prime is 49921787. The reversal of 49921784 is 48712994.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49921783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49574 + ... + 50570.

Almost surely, 2^49921784 is an apocalyptic number.

49921784 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

49921784 is an abundant number, since it is smaller than the sum of its proper divisors (52473016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49921784 is a wasteful number, since it uses less digits than its factorization.

49921784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583 (or 1579 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 49921784 is about 7065.5349408237. The cubic root of 49921784 is about 368.2109494697.

It can be divided in two parts, 49921 and 784, that added together give a palindrome (50705).

The spelling of 49921784 in words is "forty-nine million, nine hundred twenty-one thousand, seven hundred eighty-four".