147709549 has 12 divisors (see below), whose sum is σ = 169357716. Its totient is φ = 128324352.

The previous prime is 147709543. The next prime is 147709561. The reversal of 147709549 is 945907741.

It can be written as a sum of positive squares in 6 ways, for example, as 14768649 + 132940900 = 3843^2 + 11530^2 .

It is not a de Polignac number, because 147709549 - 2¹³ = 147701357 is a prime.

It is a super-2 number, since 2×147709549² = 43636221731566802, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 147709499 and 147709508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147709543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22834 + ... + 28579.

It is an arithmetic number, because the mean of its divisors is an integer number (14113143).

Almost surely, 2^147709549 is an apocalyptic number.

It is an amenable number.

147709549 is a deficient number, since it is larger than the sum of its proper divisors (21648167).

147709549 is a wasteful number, since it uses less digits than its factorization.

147709549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51456 (or 51443 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 147709549 is about 12153.5817354391. The cubic root of 147709549 is about 528.6109932713.

The spelling of 147709549 in words is "one hundred forty-seven million, seven hundred nine thousand, five hundred forty-nine".