1349909547 has 32 divisors (see below), whose sum is σ = 2085603840. Its totient is φ = 760700160.

The previous prime is 1349909507. The next prime is 1349909563. The reversal of 1349909547 is 7459099431.

It is not a de Polignac number, because 1349909547 - 2¹⁹ = 1349385259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1349909547.

It is not an unprimeable number, because it can be changed into a prime (1349909507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 976797 + ... + 978177.

It is an arithmetic number, because the mean of its divisors is an integer number (65175120).

Almost surely, 2^1349909547 is an apocalyptic number.

1349909547 is a deficient number, since it is larger than the sum of its proper divisors (735694293).

1349909547 is a wasteful number, since it uses less digits than its factorization.

1349909547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003.

The product of its (nonzero) digits is 1224720, while the sum is 51.

The square root of 1349909547 is about 36741.1152117080. The cubic root of 1349909547 is about 1105.1847652111.

The spelling of 1349909547 in words is "one billion, three hundred forty-nine million, nine hundred nine thousand, five hundred forty-seven".