1390349 has 8 divisors (see below), whose sum is σ = 1456920. Its totient is φ = 1325376.

The previous prime is 1390343. The next prime is 1390357. The reversal of 1390349 is 9430931.

It can be written as a sum of positive squares in 4 ways, for example, as 354025 + 1036324 = 595^2 + 1018^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1390349 - 2²⁰ = 341773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1607 + ... + 2315.

It is an arithmetic number, because the mean of its divisors is an integer number (182115).

2^1390349 is an apocalyptic number.

It is an amenable number.

1390349 is a deficient number, since it is larger than the sum of its proper divisors (66571).

1390349 is an equidigital number, since it uses as much as digits as its factorization.

1390349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 1390349 is about 1179.1306119341. The cubic root of 1390349 is about 111.6112425136.

The spelling of 1390349 in words is "one million, three hundred ninety thousand, three hundred forty-nine".