1390357 has 2 divisors, whose sum is σ = 1390358. Its totient is φ = 1390356.

The previous prime is 1390343. The next prime is 1390369. The reversal of 1390357 is 7530931.

1390357 is nontrivially palindromic in base 4.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1347921 + 42436 = 1161^2 + 206^2 .

It is an emirp because it is prime and its reverse (7530931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1390357 - 2¹⁵ = 1357589 is a prime.

It is a Chen prime.

1390357 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1390387) 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 as a sum of consecutive naturals, namely, 695178 + 695179.

It is an arithmetic number, because the mean of its divisors is an integer number (695179).

2^1390357 is an apocalyptic number.

It is an amenable number.

1390357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1390357 is an equidigital number, since it uses as much as digits as its factorization.

1390357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2835, while the sum is 28.

The square root of 1390357 is about 1179.1340042591. The cubic root of 1390357 is about 111.6114565818.

The spelling of 1390357 in words is "one million, three hundred ninety thousand, three hundred fifty-seven".