1339090 has 16 divisors (see below), whose sum is σ = 2552472. Its totient is φ = 504064.

The previous prime is 1339087. The next prime is 1339097. The reversal of 1339090 is 909331.

It can be written as a sum of positive squares in 4 ways, for example, as 1022121 + 316969 = 1011^2 + 563^2 .

It is not an unprimeable number, because it can be changed into a prime (1339097) 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 7 ways as a sum of consecutive naturals, for example, 3769 + ... + 4108.

2^1339090 is an apocalyptic number.

1339090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1339090 is a deficient number, since it is larger than the sum of its proper divisors (1213382).

1339090 is a wasteful number, since it uses less digits than its factorization.

1339090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7901.

The product of its (nonzero) digits is 729, while the sum is 25.

The square root of 1339090 is about 1157.1905633905. The cubic root of 1339090 is about 110.2224149977. Note that the first 3 decimals are identical.

The spelling of 1339090 in words is "one million, three hundred thirty-nine thousand, ninety".