1391459049 has 12 divisors (see below), whose sum is σ = 2018228212. Its totient is φ = 923788800.

The previous prime is 1391459029. The next prime is 1391459057. The reversal of 1391459049 is 9409541931.

1391459049 is a `hidden beast` number, since 1 + 3 + 9 + 14 + 590 + 49 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1262523024 + 128936025 = 35532^2 + 11355^2 .

It is not a de Polignac number, because 1391459049 - 2¹⁶ = 1391393513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1391458995 and 1391459013.

It is not an unprimeable number, because it can be changed into a prime (1391459029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 318592 + ... + 322929.

Almost surely, 2^1391459049 is an apocalyptic number.

It is an amenable number.

1391459049 is a deficient number, since it is larger than the sum of its proper divisors (626769163).

1391459049 is a wasteful number, since it uses less digits than its factorization.

1391459049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641768 (or 641765 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 1391459049 is about 37302.2660035553. The cubic root of 1391459049 is about 1116.4093793318.

The spelling of 1391459049 in words is "one billion, three hundred ninety-one million, four hundred fifty-nine thousand, forty-nine".