147698109 has 12 divisors (see below), whose sum is σ = 229752796. Its totient is φ = 90891072.

The previous prime is 147698093. The next prime is 147698123. The reversal of 147698109 is 901896741.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 73359225 + 74338884 = 8565^2 + 8622^2 .

It is not a de Polignac number, because 147698109 - 2⁴ = 147698093 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147698179) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 631072 + ... + 631305.

Almost surely, 2^147698109 is an apocalyptic number.

It is an amenable number.

147698109 is a deficient number, since it is larger than the sum of its proper divisors (82054687).

147698109 is a wasteful number, since it uses less digits than its factorization.

147698109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262396 (or 1262393 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 147698109 is about 12153.1110831754. Note that the first 3 decimals coincide. The cubic root of 147698109 is about 528.5973460699.

The spelling of 147698109 in words is "one hundred forty-seven million, six hundred ninety-eight thousand, one hundred nine".