1383890 has 8 divisors (see below), whose sum is σ = 2491020. Its totient is φ = 553552.

The previous prime is 1383881. The next prime is 1383901. The reversal of 1383890 is 983831.

It can be written as a sum of positive squares in 2 ways, for example, as 1216609 + 167281 = 1103^2 + 409^2 .

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

It is an unprimeable number.

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, 69185 + ... + 69204.

2^1383890 is an apocalyptic number.

1383890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1383890 is a deficient number, since it is larger than the sum of its proper divisors (1107130).

1383890 is a wasteful number, since it uses less digits than its factorization.

1383890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138396.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1383890 is about 1176.3885412567. The cubic root of 1383890 is about 111.4381405952.

The spelling of 1383890 in words is "one million, three hundred eighty-three thousand, eight hundred ninety".