147941905 has 16 divisors (see below), whose sum is σ = 194458320. Its totient is φ = 107548672.

The previous prime is 147941903. The next prime is 147941909. The reversal of 147941905 is 509149741.

It can be written as a sum of positive squares in 8 ways, for example, as 13010449 + 134931456 = 3607^2 + 11616^2 .

It is a cyclic number.

It is not a de Polignac number, because 147941905 - 2¹ = 147941903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (147941903) 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 15 ways as a sum of consecutive naturals, for example, 27544 + ... + 32473.

It is an arithmetic number, because the mean of its divisors is an integer number (12153645).

Almost surely, 2^147941905 is an apocalyptic number.

It is an amenable number.

147941905 is a deficient number, since it is larger than the sum of its proper divisors (46516415).

147941905 is a wasteful number, since it uses less digits than its factorization.

147941905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60068.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 147941905 is about 12163.1371364463. The cubic root of 147941905 is about 528.8880270150. Note that the first 3 decimals are identical.

The spelling of 147941905 in words is "one hundred forty-seven million, nine hundred forty-one thousand, nine hundred five".