49909940 has 24 divisors (see below), whose sum is σ = 105316512. Its totient is φ = 19867680.

The previous prime is 49909939. The next prime is 49909949. The reversal of 49909940 is 4990994.

It is a happy number.

49909940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×49909940² = 4982004221607200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 49909891 and 49909900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49909949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1694 + ... + 10133.

It is an arithmetic number, because the mean of its divisors is an integer number (4388188).

Almost surely, 2^49909940 is an apocalyptic number.

It is an amenable number.

49909940 is an abundant number, since it is smaller than the sum of its proper divisors (55406572).

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

49909940 is a wasteful number, since it uses less digits than its factorization.

49909940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12047 (or 12045 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 49909940 is about 7064.6967380065. The cubic root of 49909940 is about 368.1818276778.

The spelling of 49909940 in words is "forty-nine million, nine hundred nine thousand, nine hundred forty".