1339380 has 72 divisors (see below), whose sum is σ = 4647552. Its totient is φ = 305856.

The previous prime is 1339357. The next prime is 1339381. The reversal of 1339380 is 839331.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1339381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 729 + ... + 1791.

2^1339380 is an apocalyptic number.

1339380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1339380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2323776).

1339380 is an abundant number, since it is smaller than the sum of its proper divisors (3308172).

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

1339380 is a wasteful number, since it uses less digits than its factorization.

1339380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085 (or 1080 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 1339380 is about 1157.3158600831. The cubic root of 1339380 is about 110.2303711951.

Multiplying 1339380 by its sum of digits (27), we get a triangular number (36163260 = T₈₅₀₄).

It can be divided in two parts, 13 and 39380, that added together give a palindrome (39393).

The spelling of 1339380 in words is "one million, three hundred thirty-nine thousand, three hundred eighty".