1399548149 has 8 divisors (see below), whose sum is σ = 1448548920. Its totient is φ = 1350596800.

The previous prime is 1399548109. The next prime is 1399548167. The reversal of 1399548149 is 9418459931.

It can be written as a sum of positive squares in 4 ways, for example, as 785400625 + 614147524 = 28025^2 + 24782^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1399548149 - 2⁸ = 1399547893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1399548149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399548109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50819 + ... + 73359.

It is an arithmetic number, because the mean of its divisors is an integer number (181068615).

Almost surely, 2^1399548149 is an apocalyptic number.

It is an amenable number.

1399548149 is a deficient number, since it is larger than the sum of its proper divisors (49000771).

1399548149 is a wasteful number, since it uses less digits than its factorization.

1399548149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24711.

The product of its digits is 1399680, while the sum is 53.

The square root of 1399548149 is about 37410.5352674885. The cubic root of 1399548149 is about 1118.5685765794.

The spelling of 1399548149 in words is "one billion, three hundred ninety-nine million, five hundred forty-eight thousand, one hundred forty-nine".