1370389 has 2 divisors, whose sum is σ = 1370390. Its totient is φ = 1370388.

The previous prime is 1370377. The next prime is 1370407. The reversal of 1370389 is 9830731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 887364 + 483025 = 942^2 + 695^2 .

It is a cyclic number.

It is not a de Polignac number, because 1370389 - 2¹⁵ = 1337621 is a prime.

It is a super-2 number, since 2×1370389² = 3755932022642, which contains 22 as substring.

1370389 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1370389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1370329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685194 + 685195.

It is an arithmetic number, because the mean of its divisors is an integer number (685195).

2^1370389 is an apocalyptic number.

It is an amenable number.

1370389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1370389 is an equidigital number, since it uses as much as digits as its factorization.

1370389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 1370389 is about 1170.6361518422. The cubic root of 1370389 is about 111.0745650549.

The spelling of 1370389 in words is "one million, three hundred seventy thousand, three hundred eighty-nine".