6990130449 has 45 divisors (see below), whose sum is σ = 10805595515. Its totient is φ = 4354252560.

The previous prime is 6990130447. The next prime is 6990130463. The reversal of 6990130449 is 9440310996.

The square root of 6990130449 is 83607.

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

It can be written as a sum of positive squares in only one way, i.e., 3665454849 + 3324675600 = 60543^2 + 57660^2 .

It is not a de Polignac number, because 6990130449 - 2¹ = 6990130447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6990130447) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 225488064 + ... + 225488094.

Almost surely, 2^6990130449 is an apocalyptic number.

6990130449 is the 83607-th square number.

6990130449 is the 41804-th centered octagonal number.

It is an amenable number.

6990130449 is a deficient number, since it is larger than the sum of its proper divisors (3815465066).

6990130449 is an frugal number, since it uses more digits than its factorization.

6990130449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The cubic root of 6990130449 is about 1912.0317231574.

The spelling of 6990130449 in words is "six billion, nine hundred ninety million, one hundred thirty thousand, four hundred forty-nine".