6121389049 has 16 divisors (see below), whose sum is σ = 6702696000. Its totient is φ = 5568212160.

The previous prime is 6121389047. The next prime is 6121389083. The reversal of 6121389049 is 9409831216.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6121389049 - 2¹ = 6121389047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6121388996 and 6121389014.

It is not an unprimeable number, because it can be changed into a prime (6121389047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69042 + ... + 130420.

It is an arithmetic number, because the mean of its divisors is an integer number (418918500).

Almost surely, 2^6121389049 is an apocalyptic number.

It is an amenable number.

6121389049 is a deficient number, since it is larger than the sum of its proper divisors (581306951).

6121389049 is a wasteful number, since it uses less digits than its factorization.

6121389049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61608.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 6121389049 is about 78239.3062916588. The cubic root of 6121389049 is about 1829.2932313075.

The spelling of 6121389049 in words is "six billion, one hundred twenty-one million, three hundred eighty-nine thousand, forty-nine".