398273293 has 16 divisors (see below), whose sum is σ = 444966912. Its totient is φ = 353430000.

The previous prime is 398273279. The next prime is 398273299. The reversal of 398273293 is 392372893.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-398273293 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 (398273299) 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 15 ways as a sum of consecutive naturals, for example, 77968 + ... + 82918.

It is an arithmetic number, because the mean of its divisors is an integer number (27810432).

Almost surely, 2^398273293 is an apocalyptic number.

It is an amenable number.

398273293 is a deficient number, since it is larger than the sum of its proper divisors (46693619).

398273293 is a wasteful number, since it uses less digits than its factorization.

398273293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5136.

The product of its digits is 489888, while the sum is 46.

The square root of 398273293 is about 19956.7856379729. The cubic root of 398273293 is about 735.7445633402.

The spelling of 398273293 in words is "three hundred ninety-eight million, two hundred seventy-three thousand, two hundred ninety-three".