1390465 has 16 divisors (see below), whose sum is σ = 1772928. Its totient is φ = 1044736.

The previous prime is 1390457. The next prime is 1390469. The reversal of 1390465 is 5640931.

It is a cyclic number.

It is not a de Polignac number, because 1390465 - 2³ = 1390457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1390469) 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, 12249 + ... + 12361.

It is an arithmetic number, because the mean of its divisors is an integer number (110808).

2^1390465 is an apocalyptic number.

It is an amenable number.

1390465 is a deficient number, since it is larger than the sum of its proper divisors (382463).

1390465 is a wasteful number, since it uses less digits than its factorization.

1390465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1390465 is about 1179.1797996913. The cubic root of 1390465 is about 111.6143464211.

The spelling of 1390465 in words is "one million, three hundred ninety thousand, four hundred sixty-five".