1390161 has 4 divisors (see below), whose sum is σ = 1853552. Its totient is φ = 926772.

The previous prime is 1390159. The next prime is 1390177. The reversal of 1390161 is 1610931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1390161 - 2¹ = 1390159 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1390111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231691 + ... + 231696.

It is an arithmetic number, because the mean of its divisors is an integer number (463388).

2^1390161 is an apocalyptic number.

It is an amenable number.

1390161 is a deficient number, since it is larger than the sum of its proper divisors (463391).

1390161 is an equidigital number, since it uses as much as digits as its factorization.

1390161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463390.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 1390161 is about 1179.0508894870. The cubic root of 1390161 is about 111.6062116762.

It can be divided in two parts, 1390 and 161, that added together give a palindrome (1551).

The spelling of 1390161 in words is "one million, three hundred ninety thousand, one hundred sixty-one".