398273294 has 4 divisors (see below), whose sum is σ = 597409944. Its totient is φ = 199136646.

The previous prime is 398273279. The next prime is 398273299. The reversal of 398273294 is 492372893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 492372893 = 47 ⋅10476019.

It is a super-2 number, since 2×398273294² = 317243233427220872, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 99568322 + ... + 99568325.

It is an arithmetic number, because the mean of its divisors is an integer number (149352486).

Almost surely, 2^398273294 is an apocalyptic number.

398273294 is a deficient number, since it is larger than the sum of its proper divisors (199136650).

398273294 is a wasteful number, since it uses less digits than its factorization.

398273294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199136649.

The product of its digits is 653184, while the sum is 47.

The square root of 398273294 is about 19956.7856630270. The cubic root of 398273294 is about 735.7445639559.

The spelling of 398273294 in words is "three hundred ninety-eight million, two hundred seventy-three thousand, two hundred ninety-four".