49431984 has 60 divisors (see below), whose sum is σ = 148555224. Its totient is φ = 14122752.

The previous prime is 49431973. The next prime is 49431989. The reversal of 49431984 is 48913494.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (49431989) 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, 8157 + ... + 12860.

Almost surely, 2^49431984 is an apocalyptic number.

It is an amenable number.

49431984 is an abundant number, since it is smaller than the sum of its proper divisors (99123240).

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

49431984 is a wasteful number, since it uses less digits than its factorization.

49431984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21042 (or 21029 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 49431984 is about 7030.7882915076. The cubic root of 49431984 is about 367.0027742714.

The spelling of 49431984 in words is "forty-nine million, four hundred thirty-one thousand, nine hundred eighty-four".