90419543 has 4 divisors (see below), whose sum is σ = 91314888. Its totient is φ = 89524200.

The previous prime is 90419521. The next prime is 90419551. The reversal of 90419543 is 34591409.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34591409 = 449 ⋅77041.

It is a cyclic number.

It is not a de Polignac number, because 90419543 - 2¹⁰ = 90418519 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 (90419573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447521 + ... + 447722.

It is an arithmetic number, because the mean of its divisors is an integer number (22828722).

Almost surely, 2^90419543 is an apocalyptic number.

90419543 is a deficient number, since it is larger than the sum of its proper divisors (895345).

90419543 is a wasteful number, since it uses less digits than its factorization.

90419543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895344.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 90419543 is about 9508.9191289021. The cubic root of 90419543 is about 448.8357443043.

The spelling of 90419543 in words is "ninety million, four hundred nineteen thousand, five hundred forty-three".