147982809 has 16 divisors (see below), whose sum is σ = 219344384. Its totient is φ = 88128000.

The previous prime is 147982801. The next prime is 147982829. The reversal of 147982809 is 908289741.

It is not a de Polignac number, because 147982809 - 2³ = 147982801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147982801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59992 + ... + 62409.

It is an arithmetic number, because the mean of its divisors is an integer number (13709024).

Almost surely, 2^147982809 is an apocalyptic number.

It is an amenable number.

147982809 is a deficient number, since it is larger than the sum of its proper divisors (71361575).

147982809 is a wasteful number, since it uses less digits than its factorization.

147982809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122448.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 147982809 is about 12164.8184943303. The cubic root of 147982809 is about 528.9367660619.

The spelling of 147982809 in words is "one hundred forty-seven million, nine hundred eighty-two thousand, eight hundred nine".