45839440 has 20 divisors (see below), whose sum is σ = 106576884. Its totient is φ = 18335744.

The previous prime is 45839413. The next prime is 45839441. The reversal of 45839440 is 4493854.

45839440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 21790224 + 24049216 = 4668^2 + 4904^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 45839440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45839441) 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 3 ways as a sum of consecutive naturals, for example, 286417 + ... + 286576.

Almost surely, 2^45839440 is an apocalyptic number.

45839440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45839440 is an abundant number, since it is smaller than the sum of its proper divisors (60737444).

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

45839440 is a wasteful number, since it uses less digits than its factorization.

45839440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573006 (or 573000 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 45839440 is about 6770.4829960646. The cubic root of 45839440 is about 357.8874212977.

The spelling of 45839440 in words is "forty-five million, eight hundred thirty-nine thousand, four hundred forty".