1349403986 has 64 divisors (see below), whose sum is σ = 2455833600. Its totient is φ = 544065984.

The previous prime is 1349403983. The next prime is 1349403989. The reversal of 1349403986 is 6893049431.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1349403983) and next prime (1349403989).

It is a super-2 number, since 2×1349403986² = 3641782234865376392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1349403986.

It is not an unprimeable number, because it can be changed into a prime (1349403983) 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 31 ways as a sum of consecutive naturals, for example, 2047325 + ... + 2047983.

It is an arithmetic number, because the mean of its divisors is an integer number (38372400).

Almost surely, 2^1349403986 is an apocalyptic number.

1349403986 is a deficient number, since it is larger than the sum of its proper divisors (1106429614).

1349403986 is a wasteful number, since it uses less digits than its factorization.

1349403986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831.

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 1349403986 is about 36734.2345231257. The cubic root of 1349403986 is about 1105.0467786616.

The spelling of 1349403986 in words is "one billion, three hundred forty-nine million, four hundred three thousand, nine hundred eighty-six".