1353988249 has 8 divisors (see below), whose sum is σ = 1391857160. Its totient is φ = 1316186496.

The previous prime is 1353988243. The next prime is 1353988283. The reversal of 1353988249 is 9428893531.

It can be written as a sum of positive squares in 4 ways, for example, as 453988249 + 900000000 = 21307^2 + 30000^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1353988249 - 2⁵ = 1353988217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1353988196 and 1353988205.

It is not an unprimeable number, because it can be changed into a prime (1353988243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25567 + ... + 57979.

It is an arithmetic number, because the mean of its divisors is an integer number (173982145).

Almost surely, 2^1353988249 is an apocalyptic number.

It is an amenable number.

1353988249 is a deficient number, since it is larger than the sum of its proper divisors (37868911).

1353988249 is a wasteful number, since it uses less digits than its factorization.

1353988249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33579.

The product of its digits is 1866240, while the sum is 52.

The square root of 1353988249 is about 36796.5793111262. The cubic root of 1353988249 is about 1106.2967377277.

The spelling of 1353988249 in words is "one billion, three hundred fifty-three million, nine hundred eighty-eight thousand, two hundred forty-nine".