147913889 has 4 divisors (see below), whose sum is σ = 156614724. Its totient is φ = 139213056.

The previous prime is 147913877. The next prime is 147913907. The reversal of 147913889 is 988319741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 988319741 = 7333 ⋅134777.

It can be written as a sum of positive squares in 2 ways, for example, as 65739664 + 82174225 = 8108^2 + 9065^2 .

It is a cyclic number.

It is not a de Polignac number, because 147913889 - 2¹⁶ = 147848353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147913189) 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, 4350392 + ... + 4350425.

It is an arithmetic number, because the mean of its divisors is an integer number (39153681).

Almost surely, 2^147913889 is an apocalyptic number.

It is an amenable number.

147913889 is a deficient number, since it is larger than the sum of its proper divisors (8700835).

147913889 is an equidigital number, since it uses as much as digits as its factorization.

147913889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8700834.

The product of its digits is 435456, while the sum is 50.

The square root of 147913889 is about 12161.9854053522. The cubic root of 147913889 is about 528.8546394444.

The spelling of 147913889 in words is "one hundred forty-seven million, nine hundred thirteen thousand, eight hundred eighty-nine".