398298415 has 4 divisors (see below), whose sum is σ = 477958104. Its totient is φ = 318638728.

The previous prime is 398298413. The next prime is 398298421. The reversal of 398298415 is 514892893.

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

It is a cyclic number.

It is not a de Polignac number, because 398298415 - 2¹ = 398298413 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 (398298413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39829837 + ... + 39829846.

It is an arithmetic number, because the mean of its divisors is an integer number (119489526).

Almost surely, 2^398298415 is an apocalyptic number.

398298415 is a deficient number, since it is larger than the sum of its proper divisors (79659689).

398298415 is an equidigital number, since it uses as much as digits as its factorization.

398298415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79659688.

The product of its digits is 622080, while the sum is 49.

The square root of 398298415 is about 19957.4150380253. The cubic root of 398298415 is about 735.7600326060.

The spelling of 398298415 in words is "three hundred ninety-eight million, two hundred ninety-eight thousand, four hundred fifteen".