1299380401 has 6 divisors (see below), whose sum is σ = 1428244706. Its totient is φ = 1181254800.

The previous prime is 1299380399. The next prime is 1299380419. The reversal of 1299380401 is 1040839921.

It can be written as a sum of positive squares in only one way, i.e., 1270209600 + 29170801 = 35640^2 + 5401^2 .

It is not a de Polignac number, because 1299380401 - 2¹ = 1299380399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1299380441) 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 5 ways as a sum of consecutive naturals, for example, 5369220 + ... + 5369461.

Almost surely, 2^1299380401 is an apocalyptic number.

1299380401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1299380401 is a deficient number, since it is larger than the sum of its proper divisors (128864305).

1299380401 is a wasteful number, since it uses less digits than its factorization.

1299380401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10738703 (or 10738692 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1299380401 is about 36046.9194384208. The cubic root of 1299380401 is about 1091.2194642405.

The spelling of 1299380401 in words is "one billion, two hundred ninety-nine million, three hundred eighty thousand, four hundred one".