147478149 has 24 divisors (see below), whose sum is σ = 262184832. Its totient is φ = 77790240.

The previous prime is 147478109. The next prime is 147478157. The reversal of 147478149 is 941874741.

It is a happy number.

It is not a de Polignac number, because 147478149 - 2¹³ = 147469957 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147478109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89217 + ... + 90854.

It is an arithmetic number, because the mean of its divisors is an integer number (10924368).

Almost surely, 2^147478149 is an apocalyptic number.

It is an amenable number.

147478149 is a deficient number, since it is larger than the sum of its proper divisors (114706683).

147478149 is a wasteful number, since it uses less digits than its factorization.

147478149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180097 (or 180094 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 147478149 is about 12144.0581767381. The cubic root of 147478149 is about 528.3348104616.

The spelling of 147478149 in words is "one hundred forty-seven million, four hundred seventy-eight thousand, one hundred forty-nine".