6220950129 has 27 divisors (see below), whose sum is σ = 9156785547. Its totient is φ = 4069846800.

The previous prime is 6220950121. The next prime is 6220950163. The reversal of 6220950129 is 9210590226.

It is a happy number.

The square root of 6220950129 is 78873.

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

6220950129 is a `hidden beast` number, since 622 + 0 + 9 + 5 + 0 + 1 + 29 = 666.

It can be written as a sum of positive squares in only one way, i.e., 202293729 + 6018656400 = 14223^2 + 77580^2 .

It is not a de Polignac number, because 6220950129 - 2³ = 6220950121 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6220950093 and 6220950102.

It is not an unprimeable number, because it can be changed into a prime (6220950121) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 14433544 + ... + 14433974.

Almost surely, 2^6220950129 is an apocalyptic number.

6220950129 is the 78873-rd square number.

6220950129 is the 39437-th centered octagonal number.

It is an amenable number.

6220950129 is a deficient number, since it is larger than the sum of its proper divisors (2935835418).

6220950129 is an frugal number, since it uses more digits than its factorization.

6220950129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990 (or 495 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The cubic root of 6220950129 is about 1839.1574325418.

Multiplying 6220950129 by its sum of digits (36), we get a square (223954204644 = 473238²).

The spelling of 6220950129 in words is "six billion, two hundred twenty million, nine hundred fifty thousand, one hundred twenty-nine".