147855986 has 16 divisors (see below), whose sum is σ = 234653760. Its totient is φ = 69678000.

The previous prime is 147855977. The next prime is 147855989. The reversal of 147855986 is 689558741.

It is a super-2 number, since 2×147855986² = 43722785192064392, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (147855989) 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 7 ways as a sum of consecutive naturals, for example, 2390 + ... + 17361.

It is an arithmetic number, because the mean of its divisors is an integer number (14665860).

Almost surely, 2^147855986 is an apocalyptic number.

147855986 is a deficient number, since it is larger than the sum of its proper divisors (86797774).

147855986 is a wasteful number, since it uses less digits than its factorization.

147855986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19969.

The product of its digits is 2419200, while the sum is 53.

The square root of 147855986 is about 12159.6046810741. The cubic root of 147855986 is about 528.7856212088.

It can be divided in two parts, 147855 and 986, that added together give a palindrome (148841).

The spelling of 147855986 in words is "one hundred forty-seven million, eight hundred fifty-five thousand, nine hundred eighty-six".