1990359 has 16 divisors (see below), whose sum is σ = 3370240. Its totient is φ = 1137240.

The previous prime is 1990337. The next prime is 1990361. The reversal of 1990359 is 9530991.

It is not a de Polignac number, because 1990359 - 2⁵ = 1990327 is a prime.

It is a Duffinian number.

1990359 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1990319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5077 + ... + 5454.

It is an arithmetic number, because the mean of its divisors is an integer number (210640).

2^1990359 is an apocalyptic number.

1990359 is a deficient number, since it is larger than the sum of its proper divisors (1379881).

1990359 is a wasteful number, since it uses less digits than its factorization.

1990359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10547 (or 10541 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 36.

The square root of 1990359 is about 1410.8008364046. The cubic root of 1990359 is about 125.7893305008.

The spelling of 1990359 in words is "one million, nine hundred ninety thousand, three hundred fifty-nine".