398301409 has 8 divisors (see below), whose sum is σ = 440631360. Its totient is φ = 356991600.

The previous prime is 398301403. The next prime is 398301451. The reversal of 398301409 is 904103893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 398301409 - 2¹⁷ = 398170337 is a prime.

It is a super-2 number, since 2×398301409² = 317288024822770562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398301403) 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 7 ways as a sum of consecutive naturals, for example, 254214 + ... + 255775.

It is an arithmetic number, because the mean of its divisors is an integer number (55078920).

Almost surely, 2^398301409 is an apocalyptic number.

It is an amenable number.

398301409 is a deficient number, since it is larger than the sum of its proper divisors (42329951).

398301409 is a wasteful number, since it uses less digits than its factorization.

398301409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510071.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 398301409 is about 19957.4900475987. The cubic root of 398301409 is about 735.7618761651.

The spelling of 398301409 in words is "three hundred ninety-eight million, three hundred one thousand, four hundred nine".