398087911 has 8 divisors (see below), whose sum is σ = 429367904. Its totient is φ = 366901920.

The previous prime is 398087849. The next prime is 398087941. The reversal of 398087911 is 119780893.

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 398087911 - 2¹³ = 398079719 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 (398087941) 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 7 ways as a sum of consecutive naturals, for example, 14571 + ... + 31756.

It is an arithmetic number, because the mean of its divisors is an integer number (53670988).

Almost surely, 2^398087911 is an apocalyptic number.

398087911 is a deficient number, since it is larger than the sum of its proper divisors (31279993).

398087911 is a wasteful number, since it uses less digits than its factorization.

398087911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47001.

The product of its (nonzero) digits is 108864, while the sum is 46.

The square root of 398087911 is about 19952.1405117346. The cubic root of 398087911 is about 735.6303913477.

The spelling of 398087911 in words is "three hundred ninety-eight million, eighty-seven thousand, nine hundred eleven".