90398445 has 8 divisors (see below), whose sum is σ = 144637536. Its totient is φ = 48212496.

The previous prime is 90398419. The next prime is 90398453. The reversal of 90398445 is 54489309.

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

It is not a de Polignac number, because 90398445 - 2¹⁵ = 90365677 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90398397 and 90398406.

It is a congruent number.

It is an unprimeable number.

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, 3013267 + ... + 3013296.

It is an arithmetic number, because the mean of its divisors is an integer number (18079692).

Almost surely, 2^90398445 is an apocalyptic number.

It is an amenable number.

90398445 is a deficient number, since it is larger than the sum of its proper divisors (54239091).

90398445 is a wasteful number, since it uses less digits than its factorization.

90398445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6026571.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 90398445 is about 9507.8096846750. The cubic root of 90398445 is about 448.8008319655.

The spelling of 90398445 in words is "ninety million, three hundred ninety-eight thousand, four hundred forty-five".