1390965 has 16 divisors (see below), whose sum is σ = 2274048. Its totient is φ = 725696.

The previous prime is 1390937. The next prime is 1390967. The reversal of 1390965 is 5690931.

It is a cyclic number.

It is not a de Polignac number, because 1390965 - 2⁶ = 1390901 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282 + ... + 1691.

It is an arithmetic number, because the mean of its divisors is an integer number (142128).

2^1390965 is an apocalyptic number.

1390965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1390965 is a deficient number, since it is larger than the sum of its proper divisors (883083).

1390965 is a wasteful number, since it uses less digits than its factorization.

1390965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028.

The product of its (nonzero) digits is 7290, while the sum is 33.

The square root of 1390965 is about 1179.3917924083. The cubic root of 1390965 is about 111.6277233575.

The spelling of 1390965 in words is "one million, three hundred ninety thousand, nine hundred sixty-five".