1390027306 has 4 divisors (see below), whose sum is σ = 2085040962. Its totient is φ = 695013652.

The previous prime is 1390027291. The next prime is 1390027307. The reversal of 1390027306 is 6037200931.

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

It can be written as a sum of positive squares in only one way, i.e., 923856025 + 466171281 = 30395^2 + 21591^2 .

It is a super-2 number, since 2×1390027306² = 3864351822851235272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1390027307) 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 as a sum of consecutive naturals, namely, 347506825 + ... + 347506828.

Almost surely, 2^1390027306 is an apocalyptic number.

1390027306 is a deficient number, since it is larger than the sum of its proper divisors (695013656).

1390027306 is an equidigital number, since it uses as much as digits as its factorization.

1390027306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695013655.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 1390027306 is about 37283.0699647977. The cubic root of 1390027306 is about 1116.0263377905.

The spelling of 1390027306 in words is "one billion, three hundred ninety million, twenty-seven thousand, three hundred six".