1490990 has 8 divisors (see below), whose sum is σ = 2683800. Its totient is φ = 596392.

The previous prime is 1490969. The next prime is 1490999. The reversal of 1490990 is 990941.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74540 + ... + 74559.

It is an arithmetic number, because the mean of its divisors is an integer number (335475).

2^1490990 is an apocalyptic number.

1490990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1490990 is a deficient number, since it is larger than the sum of its proper divisors (1192810).

1490990 is a wasteful number, since it uses less digits than its factorization.

1490990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149106.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 1490990 is about 1221.0610140366. The cubic root of 1490990 is about 114.2417665846.

The spelling of 1490990 in words is "one million, four hundred ninety thousand, nine hundred ninety".