147698891 has 4 divisors (see below), whose sum is σ = 147723984. Its totient is φ = 147673800.

The previous prime is 147698869. The next prime is 147698899. The reversal of 147698891 is 198896741.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 147698891 - 2¹⁸ = 147436747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147698899) 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, 1601 + ... + 17261.

It is an arithmetic number, because the mean of its divisors is an integer number (36930996).

Almost surely, 2^147698891 is an apocalyptic number.

147698891 is a deficient number, since it is larger than the sum of its proper divisors (25093).

147698891 is an equidigital number, since it uses as much as digits as its factorization.

147698891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25092.

The product of its digits is 870912, while the sum is 53.

The square root of 147698891 is about 12153.1432559647. The cubic root of 147698891 is about 528.5982789693.

The spelling of 147698891 in words is "one hundred forty-seven million, six hundred ninety-eight thousand, eight hundred ninety-one".