1390486309447 has 4 divisors (see below), whose sum is σ = 1390982383000. Its totient is φ = 1389990235896.

The previous prime is 1390486309441. The next prime is 1390486309481. The reversal of 1390486309447 is 7449036840931.

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

It is a cyclic number.

It is not a de Polignac number, because 1390486309447 - 2¹⁹ = 1390485785159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1390486309391 and 1390486309400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390486309441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248032572 + ... + 248038177.

It is an arithmetic number, because the mean of its divisors is an integer number (347745595750).

Almost surely, 2^{1390486309447} is an apocalyptic number.

1390486309447 is a deficient number, since it is larger than the sum of its proper divisors (496073553).

1390486309447 is an equidigital number, since it uses as much as digits as its factorization.

1390486309447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496073552.

The product of its (nonzero) digits is 15676416, while the sum is 58.

The spelling of 1390486309447 in words is "one trillion, three hundred ninety billion, four hundred eighty-six million, three hundred nine thousand, four hundred forty-seven".