1950009 has 16 divisors (see below), whose sum is σ = 2764800. Its totient is φ = 1219856.

The previous prime is 1949999. The next prime is 1950017. The reversal of 1950009 is 9000591.

1950009 = 152² + 153² + ... + 210².

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1950009 - 2⁷ = 1949881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1950089) 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 in 15 ways as a sum of consecutive naturals, for example, 3832 + ... + 4310.

It is an arithmetic number, because the mean of its divisors is an integer number (172800).

2^1950009 is an apocalyptic number.

It is an amenable number.

1950009 is a deficient number, since it is larger than the sum of its proper divisors (814791).

1950009 is a wasteful number, since it uses less digits than its factorization.

1950009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564.

The product of its (nonzero) digits is 405, while the sum is 24.

The square root of 1950009 is about 1396.4272268901. The cubic root of 1950009 is about 124.9334899509.

The spelling of 1950009 in words is "one million, nine hundred fifty thousand, nine".