1990294 has 4 divisors (see below), whose sum is σ = 2985444. Its totient is φ = 995146.

The previous prime is 1990279. The next prime is 1990319. The reversal of 1990294 is 4920991.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1990294² = 7922540412872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 497572 + ... + 497575.

It is an arithmetic number, because the mean of its divisors is an integer number (746361).

2^1990294 is an apocalyptic number.

1990294 is a deficient number, since it is larger than the sum of its proper divisors (995150).

1990294 is an equidigital number, since it uses as much as digits as its factorization.

1990294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995149.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 1990294 is about 1410.7777996552. Note that the first 4 decimals coincide. The cubic root of 1990294 is about 125.7879611673.

The spelling of 1990294 in words is "one million, nine hundred ninety thousand, two hundred ninety-four".