90288401 has 8 divisors (see below), whose sum is σ = 103365504. Its totient is φ = 77256000.

The previous prime is 90288353. The next prime is 90288403. The reversal of 90288401 is 10488209.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 90288401 - 2¹⁸ = 90026257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90288403) 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, 6725 + ... + 15026.

It is an arithmetic number, because the mean of its divisors is an integer number (12920688).

Almost surely, 2^90288401 is an apocalyptic number.

It is an amenable number.

90288401 is a deficient number, since it is larger than the sum of its proper divisors (13077103).

90288401 is a wasteful number, since it uses less digits than its factorization.

90288401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22351.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 90288401 is about 9502.0208903159. The cubic root of 90288401 is about 448.6186463368.

The spelling of 90288401 in words is "ninety million, two hundred eighty-eight thousand, four hundred one".