1909964 has 12 divisors (see below), whose sum is σ = 3819984. Its totient is φ = 818544.

The previous prime is 1909951. The next prime is 1909981. The reversal of 1909964 is 4699091.

1909964 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34079 + ... + 34134.

It is an arithmetic number, because the mean of its divisors is an integer number (318332).

2^1909964 is an apocalyptic number.

1909964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1909964 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1909964 is a wasteful number, since it uses less digits than its factorization.

1909964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68224 (or 68222 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 1909964 is about 1382.0144717043. The cubic root of 1909964 is about 124.0723649751.

The spelling of 1909964 in words is "one million, nine hundred nine thousand, nine hundred sixty-four".