90998273 has 4 divisors (see below), whose sum is σ = 91899348. Its totient is φ = 90097200.

The previous prime is 90998269. The next prime is 90998291. The reversal of 90998273 is 37289909.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37289909 = 733 ⋅50873.

It can be written as a sum of positive squares in 2 ways, for example, as 42876304 + 48121969 = 6548^2 + 6937^2 .

It is a cyclic number.

It is not a de Polignac number, because 90998273 - 2² = 90998269 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90998203) 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, 450386 + ... + 450587.

It is an arithmetic number, because the mean of its divisors is an integer number (22974837).

Almost surely, 2^90998273 is an apocalyptic number.

It is an amenable number.

90998273 is a deficient number, since it is larger than the sum of its proper divisors (901075).

90998273 is a wasteful number, since it uses less digits than its factorization.

90998273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901074.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 90998273 is about 9539.3014943443. The cubic root of 90998273 is about 449.7912991085.

The spelling of 90998273 in words is "ninety million, nine hundred ninety-eight thousand, two hundred seventy-three".