201400090 has 16 divisors (see below), whose sum is σ = 363080520. Its totient is φ = 80435520.

The previous prime is 201400061. The next prime is 201400093. The reversal of 201400090 is 90004102.

It can be written as a sum of positive squares in 4 ways, for example, as 184334929 + 17065161 = 13577^2 + 4131^2 .

It is not an unprimeable number, because it can be changed into a prime (201400093) 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 7 ways as a sum of consecutive naturals, for example, 8625 + ... + 21844.

Almost surely, 2^201400090 is an apocalyptic number.

201400090 is a deficient number, since it is larger than the sum of its proper divisors (161680430).

201400090 is a wasteful number, since it uses less digits than its factorization.

201400090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31137.

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

The square root of 201400090 is about 14191.5499505868. The cubic root of 201400090 is about 586.1650049613.

Adding to 201400090 its reverse (90004102), we get a palindrome (291404192).

The spelling of 201400090 in words is "two hundred one million, four hundred thousand, ninety".