40210090 has 8 divisors (see below), whose sum is σ = 72378180. Its totient is φ = 16084032.

The previous prime is 40210063. The next prime is 40210091. The reversal of 40210090 is 9001204.

40210090 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 33558849 + 6651241 = 5793^2 + 2579^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (40210091) 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, 2010495 + ... + 2010514.

Almost surely, 2^40210090 is an apocalyptic number.

40210090 is a deficient number, since it is larger than the sum of its proper divisors (32168090).

40210090 is a wasteful number, since it uses less digits than its factorization.

40210090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4021016.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 40210090 is about 6341.1426415119. The cubic root of 40210090 is about 342.5928922029.

Adding to 40210090 its reverse (9001204), we get a palindrome (49211294).

The spelling of 40210090 in words is "forty million, two hundred ten thousand, ninety".