49099140 has 72 divisors (see below), whose sum is σ = 152589528. Its totient is φ = 12771840.

The previous prime is 49099139. The next prime is 49099153. The reversal of 49099140 is 4199094.

It can be written as a sum of positive squares in 4 ways, for example, as 3617604 + 45481536 = 1902^2 + 6744^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 49099095 and 49099104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4054 + ... + 10706.

It is an arithmetic number, because the mean of its divisors is an integer number (2119299).

Almost surely, 2^49099140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49099140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76294764).

49099140 is an abundant number, since it is smaller than the sum of its proper divisors (103490388).

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

49099140 is a wasteful number, since it uses less digits than its factorization.

49099140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6709 (or 6704 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 49099140 is about 7007.0778502882. The cubic root of 49099140 is about 366.1771962905.

The spelling of 49099140 in words is "forty-nine million, ninety-nine thousand, one hundred forty".