49490840 has 32 divisors (see below), whose sum is σ = 127262880. Its totient is φ = 16968192.

The previous prime is 49490827. The next prime is 49490843. The reversal of 49490840 is 4809494.

It is a junction number, because it is equal to n+sod(n) for n = 49490794 and 49490803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49490843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88097 + ... + 88656.

It is an arithmetic number, because the mean of its divisors is an integer number (3976965).

Almost surely, 2^49490840 is an apocalyptic number.

49490840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49490840 is an abundant number, since it is smaller than the sum of its proper divisors (77772040).

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

49490840 is a wasteful number, since it uses less digits than its factorization.

49490840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176771 (or 176767 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 49490840 is about 7034.9726367627. The cubic root of 49490840 is about 367.1483733109.

The spelling of 49490840 in words is "forty-nine million, four hundred ninety thousand, eight hundred forty".