49639764 has 48 divisors (see below), whose sum is σ = 121665600. Its totient is φ = 15730176.

The previous prime is 49639693. The next prime is 49639769. The reversal of 49639764 is 46793694.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49639769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22252 + ... + 24380.

It is an arithmetic number, because the mean of its divisors is an integer number (2534700).

Almost surely, 2^49639764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49639764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60832800).

49639764 is an abundant number, since it is smaller than the sum of its proper divisors (72025836).

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

49639764 is a wasteful number, since it uses less digits than its factorization.

49639764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2232 (or 2230 counting only the distinct ones).

The product of its digits is 979776, while the sum is 48.

The square root of 49639764 is about 7045.5492333813. The cubic root of 49639764 is about 367.5162693524.

It can be divided in two parts, 49639 and 764, that added together give a triangular number (50403 = T₃₁₇).

The spelling of 49639764 in words is "forty-nine million, six hundred thirty-nine thousand, seven hundred sixty-four".