40208801 has 4 divisors (see below), whose sum is σ = 40225812. Its totient is φ = 40191792.

The previous prime is 40208797. The next prime is 40208803. The reversal of 40208801 is 10880204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16394401 + 23814400 = 4049^2 + 4880^2 .

It is a cyclic number.

It is not a de Polignac number, because 40208801 - 2² = 40208797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40208803) 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, 4250 + ... + 9923.

It is an arithmetic number, because the mean of its divisors is an integer number (10056453).

Almost surely, 2^40208801 is an apocalyptic number.

It is an amenable number.

40208801 is a deficient number, since it is larger than the sum of its proper divisors (17011).

40208801 is a wasteful number, since it uses less digits than its factorization.

40208801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17010.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 40208801 is about 6341.0410028638. The cubic root of 40208801 is about 342.5892313726.

It can be divided in two parts, 4020 and 8801, that added together give a palindrome (12821).

The spelling of 40208801 in words is "forty million, two hundred eight thousand, eight hundred one".