49479840 has 72 divisors (see below), whose sum is σ = 168854868. Its totient is φ = 13194240.

The previous prime is 49479839. The next prime is 49479863. The reversal of 49479840 is 4897494.

It can be written as a sum of positive squares in 2 ways, for example, as 48944016 + 535824 = 6996^2 + 732^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15741 + ... + 18620.

Almost surely, 2^49479840 is an apocalyptic number.

49479840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49479840 is an abundant number, since it is smaller than the sum of its proper divisors (119375028).

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

49479840 is a wasteful number, since it uses less digits than its factorization.

49479840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34382 (or 34371 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 49479840 is about 7034.1907850157. The cubic root of 49479840 is about 367.1211700860.

The spelling of 49479840 in words is "forty-nine million, four hundred seventy-nine thousand, eight hundred forty".