143917998 has 32 divisors (see below), whose sum is σ = 335673600. Its totient is φ = 41118840.

The previous prime is 143917993. The next prime is 143917999. The reversal of 143917998 is 899719341.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 143917998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143917993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32908 + ... + 37023.

It is an arithmetic number, because the mean of its divisors is an integer number (10489800).

Almost surely, 2^143917998 is an apocalyptic number.

143917998 is an abundant number, since it is smaller than the sum of its proper divisors (191755602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143917998 is an equidigital number, since it uses as much as digits as its factorization.

143917998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69957 (or 69943 counting only the distinct ones).

The product of its digits is 489888, while the sum is 51.

The square root of 143917998 is about 11996.5827634373. The cubic root of 143917998 is about 524.0487664149.

The spelling of 143917998 in words is "one hundred forty-three million, nine hundred seventeen thousand, nine hundred ninety-eight".