49479040 has 128 divisors (see below), whose sum is σ = 134517600. Its totient is φ = 17252352.

The previous prime is 49479019. The next prime is 49479071. The reversal of 49479040 is 4097494.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157924 + ... + 158236.

Almost surely, 2^49479040 is an apocalyptic number.

49479040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49479040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67258800).

49479040 is an abundant number, since it is smaller than the sum of its proper divisors (85038560).

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

49479040 is a wasteful number, since it uses less digits than its factorization.

49479040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 352 counting only the distinct ones).

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

The square root of 49479040 is about 7034.1339196805. The cubic root of 49479040 is about 367.1191915124.

The spelling of 49479040 in words is "forty-nine million, four hundred seventy-nine thousand, forty".