404248193 has 4 divisors (see below), whose sum is σ = 404585988. Its totient is φ = 403910400.

The previous prime is 404248181. The next prime is 404248223. The reversal of 404248193 is 391842404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 143328784 + 260919409 = 11972^2 + 16153^2 .

It is a cyclic number.

It is not a de Polignac number, because 404248193 - 2¹⁰ = 404247169 is a prime.

It is a super-3 number, since 3×404248193³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404248093) 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, 167096 + ... + 169497.

It is an arithmetic number, because the mean of its divisors is an integer number (101146497).

Almost surely, 2^404248193 is an apocalyptic number.

It is an amenable number.

404248193 is a deficient number, since it is larger than the sum of its proper divisors (337795).

404248193 is a wasteful number, since it uses less digits than its factorization.

404248193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337794.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 404248193 is about 20105.9243259294. The cubic root of 404248193 is about 739.4055324328.

The spelling of 404248193 in words is "four hundred four million, two hundred forty-eight thousand, one hundred ninety-three".