49979644 has 96 divisors (see below), whose sum is σ = 111767040. Its totient is φ = 19219200.

The previous prime is 49979627. The next prime is 49979651. The reversal of 49979644 is 44697994.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 49979591 and 49979600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 381459 + ... + 381589.

It is an arithmetic number, because the mean of its divisors is an integer number (1164240).

Almost surely, 2^49979644 is an apocalyptic number.

49979644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

49979644 is an abundant number, since it is smaller than the sum of its proper divisors (61787396).

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

49979644 is a wasteful number, since it uses less digits than its factorization.

49979644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 209 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 52.

The square root of 49979644 is about 7069.6282787711. The cubic root of 49979644 is about 368.3531483144.

It can be divided in two parts, 4997 and 9644, that added together give a palindrome (14641).

The spelling of 49979644 in words is "forty-nine million, nine hundred seventy-nine thousand, six hundred forty-four".