1390513 has 4 divisors (see below), whose sum is σ = 1403380. Its totient is φ = 1377648.

The previous prime is 1390507. The next prime is 1390517. The reversal of 1390513 is 3150931.

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

It can be written as a sum of positive squares in 2 ways, for example, as 889249 + 501264 = 943^2 + 708^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1390513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1390517) 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, 6270 + ... + 6487.

It is an arithmetic number, because the mean of its divisors is an integer number (350845).

2^1390513 is an apocalyptic number.

It is an amenable number.

1390513 is a deficient number, since it is larger than the sum of its proper divisors (12867).

1390513 is a wasteful number, since it uses less digits than its factorization.

1390513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12866.

The product of its (nonzero) digits is 405, while the sum is 22.

The square root of 1390513 is about 1179.2001526459. The cubic root of 1390513 is about 111.6156307462.

The spelling of 1390513 in words is "one million, three hundred ninety thousand, five hundred thirteen".