6211439969 has 12 divisors (see below), whose sum is σ = 7227168624. Its totient is φ = 5322900744.

The previous prime is 6211439963. The next prime is 6211439981. The reversal of 6211439969 is 9699341126.

It is not a de Polignac number, because 6211439969 - 2¹² = 6211435873 is a prime.

It is a super-2 number, since 2×6211439969² = 77163972976981441922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6211439963) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261194 + ... + 283980.

It is an arithmetic number, because the mean of its divisors is an integer number (602264052).

Almost surely, 2^6211439969 is an apocalyptic number.

It is an amenable number.

6211439969 is a deficient number, since it is larger than the sum of its proper divisors (1015728655).

6211439969 is a wasteful number, since it uses less digits than its factorization.

6211439969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28364 (or 28357 counting only the distinct ones).

The product of its digits is 629856, while the sum is 50.

The square root of 6211439969 is about 78812.6891369658. The cubic root of 6211439969 is about 1838.2197621692.

The spelling of 6211439969 in words is "six billion, two hundred eleven million, four hundred thirty-nine thousand, nine hundred sixty-nine".