49009440 has 48 divisors (see below), whose sum is σ = 154381248. Its totient is φ = 13069056.

The previous prime is 49009439. The next prime is 49009447. The reversal of 49009440 is 4490094.

49009440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×49009440² = 4803850418227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 49009398 and 49009407.

It is not an unprimeable number, because it can be changed into a prime (49009447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50572 + ... + 51531.

It is an arithmetic number, because the mean of its divisors is an integer number (3216276).

Almost surely, 2^49009440 is an apocalyptic number.

49009440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49009440 is an abundant number, since it is smaller than the sum of its proper divisors (105371808).

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

49009440 is a wasteful number, since it uses less digits than its factorization.

49009440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102121 (or 102113 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 49009440 is about 7000.6742532416. The cubic root of 49009440 is about 365.9540687083.

The spelling of 49009440 in words is "forty-nine million, nine thousand, four hundred forty".