9004156949 has 4 divisors (see below), whose sum is σ = 9004374060. Its totient is φ = 9003939840.

The previous prime is 9004156907. The next prime is 9004156961. The reversal of 9004156949 is 9496514009.

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 3545607025 + 5458549924 = 59545^2 + 73882^2 .

It is a cyclic number.

It is not a de Polignac number, because 9004156949 - 2¹² = 9004152853 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9004156999) 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, 24812 + ... + 136469.

It is an arithmetic number, because the mean of its divisors is an integer number (2251093515).

Almost surely, 2^9004156949 is an apocalyptic number.

It is an amenable number.

9004156949 is a deficient number, since it is larger than the sum of its proper divisors (217111).

9004156949 is a wasteful number, since it uses less digits than its factorization.

9004156949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217110.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 9004156949 is about 94890.2363207090. The cubic root of 9004156949 is about 2080.4040256978.

The spelling of 9004156949 in words is "nine billion, four million, one hundred fifty-six thousand, nine hundred forty-nine".