4009651245 has 12 divisors (see below), whose sum is σ = 6950062236. Its totient is φ = 2138480640.

The previous prime is 4009651213. The next prime is 4009651253. The reversal of 4009651245 is 5421569004.

4009651245 is a `hidden beast` number, since 400 + 9 + 6 + 5 + 1 + 245 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1285437609 + 2724213636 = 35853^2 + 52194^2 .

It is not a de Polignac number, because 4009651245 - 2⁵ = 4009651213 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44551636 + ... + 44551725.

It is an arithmetic number, because the mean of its divisors is an integer number (579171853).

Almost surely, 2^4009651245 is an apocalyptic number.

4009651245 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4009651245 is a deficient number, since it is larger than the sum of its proper divisors (2940410991).

4009651245 is a wasteful number, since it uses less digits than its factorization.

4009651245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89103372 (or 89103369 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 4009651245 is about 63321.8070257001. The cubic root of 4009651245 is about 1588.6767262361.

The spelling of 4009651245 in words is "four billion, nine million, six hundred fifty-one thousand, two hundred forty-five".