1994290 has 8 divisors (see below), whose sum is σ = 3589740. Its totient is φ = 797712.

The previous prime is 1994227. The next prime is 1994299. The reversal of 1994290 is 924991.

It can be written as a sum of positive squares in 2 ways, for example, as 1979649 + 14641 = 1407^2 + 121^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1994299) 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, 99705 + ... + 99724.

2^1994290 is an apocalyptic number.

1994290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1994290 is a deficient number, since it is larger than the sum of its proper divisors (1595450).

1994290 is a wasteful number, since it uses less digits than its factorization.

1994290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199436.

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

The square root of 1994290 is about 1412.1933295410. The cubic root of 1994290 is about 125.8720882144.

It can be divided in two parts, 199 and 4290, that added together give a square (4489 = 67²).

The spelling of 1994290 in words is "one million, nine hundred ninety-four thousand, two hundred ninety".