398159403 has 8 divisors (see below), whose sum is σ = 543225408. Its totient is φ = 259266504.

The previous prime is 398159393. The next prime is 398159407. The reversal of 398159403 is 304951893.

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

It is not a de Polignac number, because 398159403 - 2⁴ = 398159387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398159407) 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, 1543125 + ... + 1543382.

It is an arithmetic number, because the mean of its divisors is an integer number (67903176).

Almost surely, 2^398159403 is an apocalyptic number.

398159403 is a deficient number, since it is larger than the sum of its proper divisors (145066005).

398159403 is a wasteful number, since it uses less digits than its factorization.

398159403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3086553.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 398159403 is about 19953.9320185271. The cubic root of 398159403 is about 735.6744256246.

The spelling of 398159403 in words is "three hundred ninety-eight million, one hundred fifty-nine thousand, four hundred three".