49423940 has 48 divisors (see below), whose sum is σ = 110315520. Its totient is φ = 18547200.

The previous prime is 49423903. The next prime is 49423949. The reversal of 49423940 is 4932494.

It is a self number, because there is not a number n which added to its sum of digits gives 49423940.

It is not an unprimeable number, because it can be changed into a prime (49423949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42365 + ... + 43515.

It is an arithmetic number, because the mean of its divisors is an integer number (2298240).

Almost surely, 2^49423940 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 49423940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55157760).

49423940 is an abundant number, since it is smaller than the sum of its proper divisors (60891580).

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

49423940 is a wasteful number, since it uses less digits than its factorization.

49423940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292 (or 1290 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 49423940 is about 7030.2162128913. The cubic root of 49423940 is about 366.9828659029.

The spelling of 49423940 in words is "forty-nine million, four hundred twenty-three thousand, nine hundred forty".