1139990 has 16 divisors (see below), whose sum is σ = 2123280. Its totient is φ = 440160.

The previous prime is 1139989. The next prime is 1139993. The reversal of 1139990 is 999311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1676 + ... + 2255.

It is an arithmetic number, because the mean of its divisors is an integer number (132705).

2^1139990 is an apocalyptic number.

1139990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1139990 is a deficient number, since it is larger than the sum of its proper divisors (983290).

1139990 is a wasteful number, since it uses less digits than its factorization.

1139990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3967.

The product of its (nonzero) digits is 2187, while the sum is 32.

The square root of 1139990 is about 1067.7031422638. The cubic root of 1139990 is about 104.4640872299.

The spelling of 1139990 in words is "one million, one hundred thirty-nine thousand, nine hundred ninety".