45434440 has 16 divisors (see below), whose sum is σ = 102227580. Its totient is φ = 18173760.

The previous prime is 45434429. The next prime is 45434443. The reversal of 45434440 is 4443454.

It can be written as a sum of positive squares in 2 ways, for example, as 45239076 + 195364 = 6726^2 + 442^2 .

It is a super-2 number, since 2×45434440² = 4128576676227200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45434399 and 45434408.

It is not an unprimeable number, because it can be changed into a prime (45434443) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 567891 + ... + 567970.

Almost surely, 2^45434440 is an apocalyptic number.

45434440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45434440 is an abundant number, since it is smaller than the sum of its proper divisors (56793140).

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

45434440 is a wasteful number, since it uses less digits than its factorization.

45434440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135872 (or 1135868 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 45434440 is about 6740.5073992987. The cubic root of 45434440 is about 356.8303011729.

Adding to 45434440 its reverse (4443454), we get a palindrome (49877894).

The spelling of 45434440 in words is "forty-five million, four hundred thirty-four thousand, four hundred forty".