147964881 has 4 divisors (see below), whose sum is σ = 197286512. Its totient is φ = 98643252.

The previous prime is 147964879. The next prime is 147964907. The reversal of 147964881 is 188469741.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 188469741 = 3 ⋅62823247.

It is not a de Polignac number, because 147964881 - 2¹ = 147964879 is a prime.

It is a super-2 number, since 2×147964881² = 43787212018688322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 147964881.

It is not an unprimeable number, because it can be changed into a prime (147964841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24660811 + ... + 24660816.

It is an arithmetic number, because the mean of its divisors is an integer number (49321628).

Almost surely, 2^147964881 is an apocalyptic number.

It is an amenable number.

147964881 is a deficient number, since it is larger than the sum of its proper divisors (49321631).

147964881 is an equidigital number, since it uses as much as digits as its factorization.

147964881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49321630.

The product of its digits is 387072, while the sum is 48.

The square root of 147964881 is about 12164.0815929523. The cubic root of 147964881 is about 528.9154051093.

The spelling of 147964881 in words is "one hundred forty-seven million, nine hundred sixty-four thousand, eight hundred eighty-one".