49491040 has 48 divisors (see below), whose sum is σ = 117443088. Its totient is φ = 19708416.

The previous prime is 49490993. The next prime is 49491041. The reversal of 49491040 is 4019494.

It is a junction number, because it is equal to n+sod(n) for n = 49490993 and 49491011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49491041) 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, 44734 + ... + 45826.

It is an arithmetic number, because the mean of its divisors is an integer number (2446731).

Almost surely, 2^49491040 is an apocalyptic number.

49491040 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 49491040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58721544).

49491040 is an abundant number, since it is smaller than the sum of its proper divisors (67952048).

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

49491040 is a wasteful number, since it uses less digits than its factorization.

49491040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391 (or 1383 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 49491040 is about 7034.9868514447. The cubic root of 49491040 is about 367.1488678777.

The spelling of 49491040 in words is "forty-nine million, four hundred ninety-one thousand, forty".