1394091249 has 8 divisors (see below), whose sum is σ = 1939605312. Its totient is φ = 888985680.

The previous prime is 1394091247. The next prime is 1394091253. The reversal of 1394091249 is 9421904931.

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

It is not a de Polignac number, because 1394091249 - 2¹ = 1394091247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1394091249.

It is not an unprimeable number, because it can be changed into a prime (1394091247) 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, 10102042 + ... + 10102179.

It is an arithmetic number, because the mean of its divisors is an integer number (242450664).

Almost surely, 2^1394091249 is an apocalyptic number.

It is an amenable number.

1394091249 is a deficient number, since it is larger than the sum of its proper divisors (545514063).

1394091249 is a wasteful number, since it uses less digits than its factorization.

1394091249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20204247.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 1394091249 is about 37337.5313726015. The cubic root of 1394091249 is about 1117.1129002727.

The spelling of 1394091249 in words is "one billion, three hundred ninety-four million, ninety-one thousand, two hundred forty-nine".