7280077409 has 12 divisors (see below), whose sum is σ = 8075496660. Its totient is φ = 6557522400.

The previous prime is 7280077333. The next prime is 7280077421. The reversal of 7280077409 is 9047700827.

It can be written as a sum of positive squares in 2 ways, for example, as 5920533025 + 1359544384 = 76945^2 + 36872^2 .

It is not a de Polignac number, because 7280077409 - 2¹⁶ = 7280011873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7280077409.

It is not an unprimeable number, because it can be changed into a prime (7280077459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 262802 + ... + 289179.

It is an arithmetic number, because the mean of its divisors is an integer number (672958055).

Almost surely, 2^7280077409 is an apocalyptic number.

It is an amenable number.

7280077409 is a deficient number, since it is larger than the sum of its proper divisors (795419251).

7280077409 is a wasteful number, since it uses less digits than its factorization.

7280077409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552112 (or 552101 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 7280077409 is about 85323.3696533371. The cubic root of 7280077409 is about 1938.1110860172. Note that the first 3 decimals are identical.

The spelling of 7280077409 in words is "seven billion, two hundred eighty million, seventy-seven thousand, four hundred nine".