147971998 has 8 divisors (see below), whose sum is σ = 222010920. Its totient is φ = 73968360.

The previous prime is 147971983. The next prime is 147972017. The reversal of 147971998 is 899179741.

147971998 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×147971998² = 43791424384224008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8353 + ... + 19123.

It is an arithmetic number, because the mean of its divisors is an integer number (27751365).

Almost surely, 2^147971998 is an apocalyptic number.

147971998 is a deficient number, since it is larger than the sum of its proper divisors (74038922).

147971998 is a wasteful number, since it uses less digits than its factorization.

147971998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17642.

The product of its digits is 1143072, while the sum is 55.

The square root of 147971998 is about 12164.3741310435. The cubic root of 147971998 is about 528.9238851183.

The spelling of 147971998 in words is "one hundred forty-seven million, nine hundred seventy-one thousand, nine hundred ninety-eight".