43540004 has 6 divisors (see below), whose sum is σ = 76195014. Its totient is φ = 21770000.

The previous prime is 43539983. The next prime is 43540033. The reversal of 43540004 is 40004534.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 43533604 + 6400 = 6598^2 + 80^2 .

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 as a sum of consecutive naturals, namely, 5442497 + ... + 5442504.

It is an arithmetic number, because the mean of its divisors is an integer number (12699169).

Almost surely, 2^43540004 is an apocalyptic number.

It is an amenable number.

43540004 is a deficient number, since it is larger than the sum of its proper divisors (32655010).

43540004 is a wasteful number, since it uses less digits than its factorization.

43540004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10885005 (or 10885003 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 43540004 is about 6598.4849776293. The cubic root of 43540004 is about 351.8002590105.

Adding to 43540004 its reverse (40004534), we get a palindrome (83544538).

The spelling of 43540004 in words is "forty-three million, five hundred forty thousand, four".