398305355 has 16 divisors (see below), whose sum is σ = 547884480. Its totient is φ = 272305152.

The previous prime is 398305351. The next prime is 398305357. The reversal of 398305355 is 553503893.

It is not a de Polignac number, because 398305355 - 2² = 398305351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398305351) 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, 5090 + ... + 28679.

It is an arithmetic number, because the mean of its divisors is an integer number (34242780).

Almost surely, 2^398305355 is an apocalyptic number.

398305355 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

398305355 is a deficient number, since it is larger than the sum of its proper divisors (149579125).

398305355 is a wasteful number, since it uses less digits than its factorization.

398305355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34118.

The product of its (nonzero) digits is 243000, while the sum is 41.

The square root of 398305355 is about 19957.5889074808. The cubic root of 398305355 is about 735.7643059052.

The spelling of 398305355 in words is "three hundred ninety-eight million, three hundred five thousand, three hundred fifty-five".