49009040 has 20 divisors (see below), whose sum is σ = 113946204. Its totient is φ = 19603584.

The previous prime is 49009039. The next prime is 49009049. The reversal of 49009040 is 4090094.

49009040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 37503376 + 11505664 = 6124^2 + 3392^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (49009049) 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 3 ways as a sum of consecutive naturals, for example, 306227 + ... + 306386.

Almost surely, 2^49009040 is an apocalyptic number.

49009040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49009040 is an abundant number, since it is smaller than the sum of its proper divisors (64937164).

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

49009040 is a wasteful number, since it uses less digits than its factorization.

49009040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612626 (or 612620 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 49009040 is about 7000.6456845065. The cubic root of 49009040 is about 365.9530731040.

The spelling of 49009040 in words is "forty-nine million, nine thousand, forty".