49000042000009 has 3 divisors (see below), whose sum is σ = 49000049000013. Its totient is φ = 49000035000006.

The previous prime is 49000041999991. The next prime is 49000042000027. The reversal of 49000042000009 is 90000024000094.

The square root of 49000042000009 is 7000003.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (49000041999991) and next prime (49000042000027).

It is not a de Polignac number, because 49000042000009 - 2¹⁷ = 49000041868937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49000042000099) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3500002 + ... + 10500004.

It is an arithmetic number, because the mean of its divisors is an integer number (16333349666671).

Almost surely, 2^{49000042000009} is an apocalyptic number.

49000042000009 is the 7000003-rd square number.

49000042000009 is the 3500002-nd centered octagonal number.

It is an amenable number.

49000042000009 is a deficient number, since it is larger than the sum of its proper divisors (7000004).

49000042000009 is an frugal number, since it uses more digits than its factorization.

49000042000009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14000006 (or 7000003 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 49000042000009 in words is "forty-nine trillion, forty-two million, nine", and thus it is an aban number and an uban number.