1390194 has 36 divisors (see below), whose sum is σ = 3268746. Its totient is φ = 426816.

The previous prime is 1390177. The next prime is 1390199. The reversal of 1390194 is 4910931.

It can be written as a sum of positive squares in 3 ways, for example, as 974169 + 416025 = 987^2 + 645^2 .

It is not an unprimeable number, because it can be changed into a prime (1390199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2814 + ... + 3270.

2^1390194 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1390194, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1634373).

1390194 is an abundant number, since it is smaller than the sum of its proper divisors (1878552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1390194 is a wasteful number, since it uses less digits than its factorization.

1390194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 1390194 is about 1179.0648837108. The cubic root of 1390194 is about 111.6070947815.

The spelling of 1390194 in words is "one million, three hundred ninety thousand, one hundred ninety-four".