1369206427 has 4 divisors (see below), whose sum is σ = 1391652496. Its totient is φ = 1346760360.

The previous prime is 1369206409. The next prime is 1369206457. The reversal of 1369206427 is 7246029631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1369206427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1369206427.

It is not an unprimeable number, because it can be changed into a prime (1369206407) 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 3 ways as a sum of consecutive naturals, for example, 11222943 + ... + 11223064.

It is an arithmetic number, because the mean of its divisors is an integer number (347913124).

Almost surely, 2^1369206427 is an apocalyptic number.

1369206427 is a deficient number, since it is larger than the sum of its proper divisors (22446069).

1369206427 is an equidigital number, since it uses as much as digits as its factorization.

1369206427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22446068.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 1369206427 is about 37002.7894489051. The cubic root of 1369206427 is about 1110.4260537443.

The spelling of 1369206427 in words is "one billion, three hundred sixty-nine million, two hundred six thousand, four hundred twenty-seven".