1390484 has 6 divisors (see below), whose sum is σ = 2433354. Its totient is φ = 695240.

The previous prime is 1390483. The next prime is 1390489. The reversal of 1390484 is 4840931.

It can be written as a sum of positive squares in only one way, i.e., 1373584 + 16900 = 1172^2 + 130^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390483) 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 as a sum of consecutive naturals, namely, 173807 + ... + 173814.

It is an arithmetic number, because the mean of its divisors is an integer number (405559).

2^1390484 is an apocalyptic number.

It is an amenable number.

1390484 is a deficient number, since it is larger than the sum of its proper divisors (1042870).

1390484 is a wasteful number, since it uses less digits than its factorization.

1390484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347625 (or 347623 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1390484 is about 1179.1878561111. The cubic root of 1390484 is about 111.6148548033.

The spelling of 1390484 in words is "one million, three hundred ninety thousand, four hundred eighty-four".