1950989 has 2 divisors, whose sum is σ = 1950990. Its totient is φ = 1950988.

The previous prime is 1950979. The next prime is 1951003. The reversal of 1950989 is 9890591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1755625 + 195364 = 1325^2 + 442^2 .

It is an emirp because it is prime and its reverse (9890591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1950989 - 2²⁰ = 902413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1950919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 975494 + 975495.

It is an arithmetic number, because the mean of its divisors is an integer number (975495).

2^1950989 is an apocalyptic number.

It is an amenable number.

1950989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1950989 is an equidigital number, since it uses as much as digits as its factorization.

1950989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 41.

The square root of 1950989 is about 1396.7780782930. The cubic root of 1950989 is about 124.9544153784.

The spelling of 1950989 in words is "one million, nine hundred fifty thousand, nine hundred eighty-nine".