147229009 has 4 divisors (see below), whose sum is σ = 147351204. Its totient is φ = 147106816.

The previous prime is 147229001. The next prime is 147229021. The reversal of 147229009 is 900922741.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 45158400 + 102070609 = 6720^2 + 10103^2 .

It is a cyclic number.

It is not a de Polignac number, because 147229009 - 2³ = 147229001 is a prime.

It is a super-2 number, since 2×147229009² = 43352762182244162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147229001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59272 + ... + 61705.

It is an arithmetic number, because the mean of its divisors is an integer number (36837801).

Almost surely, 2^147229009 is an apocalyptic number.

It is an amenable number.

147229009 is a deficient number, since it is larger than the sum of its proper divisors (122195).

147229009 is a wasteful number, since it uses less digits than its factorization.

147229009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122194.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 147229009 is about 12133.7961495980. The cubic root of 147229009 is about 528.0371312749.

The spelling of 147229009 in words is "one hundred forty-seven million, two hundred twenty-nine thousand, nine".