398979143 has 8 divisors (see below), whose sum is σ = 401856000. Its totient is φ = 396112608.

The previous prime is 398979127. The next prime is 398979149. The reversal of 398979143 is 341979893.

It is a happy number.

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 398979143 - 2⁴ = 398979127 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 (398979149) 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, 85433 + ... + 89981.

It is an arithmetic number, because the mean of its divisors is an integer number (50232000).

Almost surely, 2^398979143 is an apocalyptic number.

398979143 is a deficient number, since it is larger than the sum of its proper divisors (2876857).

398979143 is a wasteful number, since it uses less digits than its factorization.

398979143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5161.

The product of its digits is 1469664, while the sum is 53.

The square root of 398979143 is about 19974.4622706094. The cubic root of 398979143 is about 736.1789541760.

The spelling of 398979143 in words is "three hundred ninety-eight million, nine hundred seventy-nine thousand, one hundred forty-three".