1390938 has 8 divisors (see below), whose sum is σ = 2781888. Its totient is φ = 463644.

The previous prime is 1390937. The next prime is 1390967. The reversal of 1390938 is 8390931.

It is a sphenic number, since it is the product of 3 distinct primes.

1390938 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1390899 and 1390908.

It is not an unprimeable number, because it can be changed into a prime (1390931) 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 3 ways as a sum of consecutive naturals, for example, 115906 + ... + 115917.

It is an arithmetic number, because the mean of its divisors is an integer number (347736).

2^1390938 is an apocalyptic number.

1390938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1390938 is a wasteful number, since it uses less digits than its factorization.

1390938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231828.

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

The square root of 1390938 is about 1179.3803457748. The cubic root of 1390938 is about 111.6270010848.

Multiplying 1390938 by its sum of digits (33), we get a palindrome (45900954).

It can be divided in two parts, 13 and 90938, that added together give a triangular number (90951 = T₄₂₆).

The spelling of 1390938 in words is "one million, three hundred ninety thousand, nine hundred thirty-eight".