398632143 has 32 divisors (see below), whose sum is σ = 665280000. Its totient is φ = 206695296.

The previous prime is 398632139. The next prime is 398632177. The reversal of 398632143 is 341236893.

It is not a de Polignac number, because 398632143 - 2² = 398632139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398632243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3733 + ... + 28481.

It is an arithmetic number, because the mean of its divisors is an integer number (20790000).

Almost surely, 2^398632143 is an apocalyptic number.

398632143 is a deficient number, since it is larger than the sum of its proper divisors (266647857).

398632143 is a wasteful number, since it uses less digits than its factorization.

398632143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24831.

The product of its digits is 93312, while the sum is 39.

The square root of 398632143 is about 19965.7742900194. The cubic root of 398632143 is about 735.9654691729.

The spelling of 398632143 in words is "three hundred ninety-eight million, six hundred thirty-two thousand, one hundred forty-three".