1344389986 has 12 divisors (see below), whose sum is σ = 2024024706. Its totient is φ = 669724160.

The previous prime is 1344389983. The next prime is 1344390001. The reversal of 1344389986 is 6899834431.

It can be written as a sum of positive squares in 3 ways, for example, as 1329987961 + 14402025 = 36469^2 + 3795^2 .

It is not an unprimeable number, because it can be changed into a prime (1344389983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 153666 + ... + 162178.

Almost surely, 2^1344389986 is an apocalyptic number.

1344389986 is a deficient number, since it is larger than the sum of its proper divisors (679634720).

1344389986 is an frugal number, since it uses more digits than its factorization.

1344389986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9077 (or 8796 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 55.

The square root of 1344389986 is about 36665.9240439949. The cubic root of 1344389986 is about 1103.6764004882.

The spelling of 1344389986 in words is "one billion, three hundred forty-four million, three hundred eighty-nine thousand, nine hundred eighty-six".