49457440 has 24 divisors (see below), whose sum is σ = 116843580. Its totient is φ = 19782912.

The previous prime is 49457423. The next prime is 49457449. The reversal of 49457440 is 4475494.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 46621584 + 2835856 = 6828^2 + 1684^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 49457440.

It is not an unprimeable number, because it can be changed into a prime (49457449) 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 3 ways as a sum of consecutive naturals, for example, 154395 + ... + 154714.

Almost surely, 2^49457440 is an apocalyptic number.

49457440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49457440 is an abundant number, since it is smaller than the sum of its proper divisors (67386140).

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

49457440 is a wasteful number, since it uses less digits than its factorization.

49457440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309124 (or 309116 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 49457440 is about 7032.5983818216. The cubic root of 49457440 is about 367.0657619610.

The spelling of 49457440 in words is "forty-nine million, four hundred fifty-seven thousand, four hundred forty".