49489440 has 384 divisors, whose sum is σ = 211341312. Its totient is φ = 9400320.

The previous prime is 49489411. The next prime is 49489463. The reversal of 49489440 is 4498494.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 49489392 and 49489401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 480429 + ... + 480531.

It is an arithmetic number, because the mean of its divisors is an integer number (550368).

Almost surely, 2^49489440 is an apocalyptic number.

49489440 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 49489440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105670656).

49489440 is an abundant number, since it is smaller than the sum of its proper divisors (161851872).

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

49489440 is a wasteful number, since it uses less digits than its factorization.

49489440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 49489440 is about 7034.8731331844. The cubic root of 49489440 is about 367.1449113062.

The spelling of 49489440 in words is "forty-nine million, four hundred eighty-nine thousand, four hundred forty".