398022283 has 4 divisors (see below), whose sum is σ = 408779680. Its totient is φ = 387264888.

The previous prime is 398022281. The next prime is 398022323. The reversal of 398022283 is 382220893.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 382220893 = 83 ⋅4605071.

It is a cyclic number.

It is not a de Polignac number, because 398022283 - 2¹ = 398022281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 10757359 = 398022283 / (3 + 9 + 8 + 0 + 2 + 2 + 2 + 8 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398022281) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5378643 + ... + 5378716.

It is an arithmetic number, because the mean of its divisors is an integer number (102194920).

Almost surely, 2^398022283 is an apocalyptic number.

398022283 is a deficient number, since it is larger than the sum of its proper divisors (10757397).

398022283 is a wasteful number, since it uses less digits than its factorization.

398022283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10757396.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 398022283 is about 19950.4958083753. The cubic root of 398022283 is about 735.5899642600.

The spelling of 398022283 in words is "three hundred ninety-eight million, twenty-two thousand, two hundred eighty-three".