49777644 has 48 divisors (see below), whose sum is σ = 139731200. Its totient is φ = 13473216.

The previous prime is 49777639. The next prime is 49777667. The reversal of 49777644 is 44677794.

It is a junction number, because it is equal to n+sod(n) for n = 49777593 and 49777602.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13999 + ... + 17190.

Almost surely, 2^49777644 is an apocalyptic number.

It is an amenable number.

49777644 is an abundant number, since it is smaller than the sum of its proper divisors (89953556).

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

49777644 is a wasteful number, since it uses less digits than its factorization.

49777644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31222 (or 31220 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 48.

The square root of 49777644 is about 7055.3273488903. The cubic root of 49777644 is about 367.8562273124.

It can be divided in two parts, 4977 and 7644, that added together give a palindrome (12621).

The spelling of 49777644 in words is "forty-nine million, seven hundred seventy-seven thousand, six hundred forty-four".