90432445 has 8 divisors (see below), whose sum is σ = 108647136. Its totient is φ = 72260496.

The previous prime is 90432443. The next prime is 90432449. The reversal of 90432445 is 54423409.

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 90432445 - 2¹ = 90432443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90432443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5827 + ... + 14656.

It is an arithmetic number, because the mean of its divisors is an integer number (13580892).

Almost surely, 2^90432445 is an apocalyptic number.

It is an amenable number.

90432445 is a deficient number, since it is larger than the sum of its proper divisors (18214691).

90432445 is a wasteful number, since it uses less digits than its factorization.

90432445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21371.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 90432445 is about 9509.5975204001. The cubic root of 90432445 is about 448.8570914717.

The spelling of 90432445 in words is "ninety million, four hundred thirty-two thousand, four hundred forty-five".