147897913 has 4 divisors (see below), whose sum is σ = 147957840. Its totient is φ = 147837988.

The previous prime is 147897901. The next prime is 147897923. The reversal of 147897913 is 319798741.

147897913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 319798741 = 6781 ⋅47161.

It is a cyclic number.

It is not a de Polignac number, because 147897913 - 2¹⁷ = 147766841 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147897923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26095 + ... + 31252.

It is an arithmetic number, because the mean of its divisors is an integer number (36989460).

Almost surely, 2^147897913 is an apocalyptic number.

It is an amenable number.

147897913 is a deficient number, since it is larger than the sum of its proper divisors (59927).

147897913 is an equidigital number, since it uses as much as digits as its factorization.

147897913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59926.

The product of its digits is 381024, while the sum is 49.

The square root of 147897913 is about 12161.3285869596. The cubic root of 147897913 is about 528.8355984425.

It can be divided in two parts, 147897 and 913, that multiplied together give a triangular number (135029961 = T₁₆₄₃₃).

The spelling of 147897913 in words is "one hundred forty-seven million, eight hundred ninety-seven thousand, nine hundred thirteen".