2774898409 has 4 divisors (see below), whose sum is σ = 2842578900. Its totient is φ = 2707217920.

The previous prime is 2774898293. The next prime is 2774898431. The reversal of 2774898409 is 9048984772.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99940009 + 2674958400 = 9997^2 + 51720^2 .

It is a cyclic number.

It is not a de Polignac number, because 2774898409 - 2⁷ = 2774898281 is a prime.

It is a super-2 number, since 2×2774898409² = 15400122360541462562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2774898209) 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 3 ways as a sum of consecutive naturals, for example, 33840184 + ... + 33840265.

It is an arithmetic number, because the mean of its divisors is an integer number (710644725).

Almost surely, 2^2774898409 is an apocalyptic number.

It is an amenable number.

2774898409 is a deficient number, since it is larger than the sum of its proper divisors (67680491).

2774898409 is an equidigital number, since it uses as much as digits as its factorization.

2774898409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67680490.

The product of its (nonzero) digits is 8128512, while the sum is 58.

The square root of 2774898409 is about 52677.3044963388. The cubic root of 2774898409 is about 1405.2352301782.

The spelling of 2774898409 in words is "two billion, seven hundred seventy-four million, eight hundred ninety-eight thousand, four hundred nine".