4949009781769 has 27 divisors (see below), whose sum is σ = 5311187747047. Its totient is φ = 4610586878144.

The previous prime is 4949009781743. The next prime is 4949009781799. The reversal of 4949009781769 is 9671879009494.

The square root of 4949009781769 is 2224637.

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., 3853035297225 + 1095974484544 = 1962915^2 + 1046888^2 .

It is not a de Polignac number, because 4949009781769 - 2⁷ = 4949009781641 is a prime.

It is a super-2 number, since 2×4949009781769² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4949009781719) 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, 4046614092 + ... + 4046615314.

Almost surely, 2^{4949009781769} is an apocalyptic number.

4949009781769 is the 2224637-th square number.

4949009781769 is the 1112319-th centered octagonal number.

It is an amenable number.

4949009781769 is a deficient number, since it is larger than the sum of its proper divisors (362177965278).

4949009781769 is an frugal number, since it uses more digits than its factorization.

4949009781769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2694 (or 1347 counting only the distinct ones).

The product of its (nonzero) digits is 246903552, while the sum is 73.

The spelling of 4949009781769 in words is "four trillion, nine hundred forty-nine billion, nine million, seven hundred eighty-one thousand, seven hundred sixty-nine".