45129609 has 16 divisors (see below), whose sum is σ = 76410240. Its totient is φ = 25788240.

The previous prime is 45129607. The next prime is 45129613. The reversal of 45129609 is 90692154.

45129609 is a `hidden beast` number, since 45 + 1 + 2 + 9 + 609 = 666.

45129609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45129609 - 2¹ = 45129607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45129607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119202 + ... + 119579.

It is an arithmetic number, because the mean of its divisors is an integer number (4775640).

Almost surely, 2^45129609 is an apocalyptic number.

It is an amenable number.

45129609 is a deficient number, since it is larger than the sum of its proper divisors (31280631).

45129609 is a wasteful number, since it uses less digits than its factorization.

45129609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238797 (or 238791 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 45129609 is about 6717.8574709501. The cubic root of 45129609 is about 356.0304885936.

The spelling of 45129609 in words is "forty-five million, one hundred twenty-nine thousand, six hundred nine".