90998473 has 4 divisors (see below), whose sum is σ = 92540880. Its totient is φ = 89456068.

The previous prime is 90998447. The next prime is 90998477. The reversal of 90998473 is 37489909.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90998473 - 2²¹ = 88901321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90998477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771115 + ... + 771232.

It is an arithmetic number, because the mean of its divisors is an integer number (23135220).

Almost surely, 2^90998473 is an apocalyptic number.

It is an amenable number.

90998473 is a deficient number, since it is larger than the sum of its proper divisors (1542407).

90998473 is a wasteful number, since it uses less digits than its factorization.

90998473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542406.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 90998473 is about 9539.3119772864. The cubic root of 90998473 is about 449.7916286319.

The spelling of 90998473 in words is "ninety million, nine hundred ninety-eight thousand, four hundred seventy-three".