6211488969 has 81 divisors (see below), whose sum is σ = 10916394957. Its totient is φ = 3523886856.

The previous prime is 6211488947. The next prime is 6211488973. The reversal of 6211488969 is 9698841126.

The square root of 6211488969 is 78813.

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

6211488969 is a `hidden beast` number, since 62 + 11 + 488 + 96 + 9 = 666.

It is a tau number, because it is divible by the number of its divisors (81).

It is not a de Polignac number, because 6211488969 - 2⁷ = 6211488841 is a prime.

It is a super-2 number, since 2×6211488969² = 77165190424017365922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6211488929) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 44686902 + ... + 44687040.

Almost surely, 2^6211488969 is an apocalyptic number.

6211488969 is the 78813-rd square number.

6211488969 is the 39407-th centered octagonal number.

It is an amenable number.

6211488969 is a deficient number, since it is larger than the sum of its proper divisors (4704905988).

6211488969 is an frugal number, since it uses more digits than its factorization.

6211488969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 149 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The cubic root of 6211488969 is about 1838.2245958595.

The spelling of 6211488969 in words is "six billion, two hundred eleven million, four hundred eighty-eight thousand, nine hundred sixty-nine".