8728490349 has 18 divisors (see below), whose sum is σ = 12651534350. Its totient is φ = 5798839536.

The previous prime is 8728490339. The next prime is 8728490357. The reversal of 8728490349 is 9430948278.

8728490349 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8103240324 + 625250025 = 90018^2 + 25005^2 .

It is not a de Polignac number, because 8728490349 - 2¹² = 8728486253 is a prime.

It is a super-2 number, since 2×8728490349² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8728490295 and 8728490304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8728490339) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5235214 + ... + 5236880.

Almost surely, 2^8728490349 is an apocalyptic number.

It is an amenable number.

8728490349 is a deficient number, since it is larger than the sum of its proper divisors (3923044001).

8728490349 is an equidigital number, since it uses as much as digits as its factorization.

8728490349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3689 (or 2019 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The square root of 8728490349 is about 93426.3900030393. The cubic root of 8728490349 is about 2058.9527423447.

The spelling of 8728490349 in words is "eight billion, seven hundred twenty-eight million, four hundred ninety thousand, three hundred forty-nine".