49749040 has 40 divisors (see below), whose sum is σ = 126183888. Its totient is φ = 18090240.

The previous prime is 49749013. The next prime is 49749047. The reversal of 49749040 is 4094794.

49749040 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 (40).

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 not an unprimeable number, because it can be changed into a prime (49749047) 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, 27387 + ... + 29146.

Almost surely, 2^49749040 is an apocalyptic number.

49749040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49749040 is an abundant number, since it is smaller than the sum of its proper divisors (76434848).

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

49749040 is a wasteful number, since it uses less digits than its factorization.

49749040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56557 (or 56551 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 49749040 is about 7053.2999369090. The cubic root of 49749040 is about 367.7857527325.

The spelling of 49749040 in words is "forty-nine million, seven hundred forty-nine thousand, forty".