1338990 has 16 divisors (see below), whose sum is σ = 3213648. Its totient is φ = 357056.

The previous prime is 1338979. The next prime is 1339001. The reversal of 1338990 is 998331.

It is an interprime number because it is at equal distance from previous prime (1338979) and next prime (1339001).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22287 + ... + 22346.

It is an arithmetic number, because the mean of its divisors is an integer number (200853).

2^1338990 is an apocalyptic number.

1338990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1338990 is an abundant number, since it is smaller than the sum of its proper divisors (1874658).

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

1338990 is a wasteful number, since it uses less digits than its factorization.

1338990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44643.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 1338990 is about 1157.1473544886. The cubic root of 1338990 is about 110.2196712150.

The spelling of 1338990 in words is "one million, three hundred thirty-eight thousand, nine hundred ninety".