1390235 has 32 divisors (see below), whose sum is σ = 2184192. Its totient is φ = 823680.

The previous prime is 1390219. The next prime is 1390241. The reversal of 1390235 is 5320931.

It is a happy number.

It is not a de Polignac number, because 1390235 - 2⁴ = 1390219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1390235.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8777 + ... + 8933.

It is an arithmetic number, because the mean of its divisors is an integer number (68256).

2^1390235 is an apocalyptic number.

1390235 is a deficient number, since it is larger than the sum of its proper divisors (793957).

1390235 is a wasteful number, since it uses less digits than its factorization.

1390235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 1390235 is about 1179.0822702424. The cubic root of 1390235 is about 111.6081919536.

The spelling of 1390235 in words is "one million, three hundred ninety thousand, two hundred thirty-five".