398023147 has 8 divisors (see below), whose sum is σ = 401371200. Its totient is φ = 394687944.

The previous prime is 398023127. The next prime is 398023151. The reversal of 398023147 is 741320893.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398023147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398023117) 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, 64908 + ... + 70774.

It is an arithmetic number, because the mean of its divisors is an integer number (50171400).

Almost surely, 2^398023147 is an apocalyptic number.

398023147 is a deficient number, since it is larger than the sum of its proper divisors (3348053).

398023147 is a wasteful number, since it uses less digits than its factorization.

398023147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6425.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 398023147 is about 19950.5174619607. The cubic root of 398023147 is about 735.5904965161.

The spelling of 398023147 in words is "three hundred ninety-eight million, twenty-three thousand, one hundred forty-seven".