49439772 has 36 divisors (see below), whose sum is σ = 125272056. Its totient is φ = 16440480.

The previous prime is 49439749. The next prime is 49439773. The reversal of 49439772 is 27793494.

49439772 is a `hidden beast` number, since 494 + 3 + 97 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49439773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16278 + ... + 19074.

Almost surely, 2^49439772 is an apocalyptic number.

It is an amenable number.

49439772 is an abundant number, since it is smaller than the sum of its proper divisors (75832284).

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

49439772 is a wasteful number, since it uses less digits than its factorization.

49439772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3298 (or 3293 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 49439772 is about 7031.3421193966. The cubic root of 49439772 is about 367.0220469992.

The spelling of 49439772 in words is "forty-nine million, four hundred thirty-nine thousand, seven hundred seventy-two".