1909494 has 24 divisors (see below), whose sum is σ = 4291560. Its totient is φ = 636336.

The previous prime is 1909489. The next prime is 1909513. The reversal of 1909494 is 4949091.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1479 + ... + 2450.

It is an arithmetic number, because the mean of its divisors is an integer number (178815).

2^1909494 is an apocalyptic number.

1909494 is an abundant number, since it is smaller than the sum of its proper divisors (2382066).

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

1909494 is an equidigital number, since it uses as much as digits as its factorization.

1909494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946 (or 3934 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 1909494 is about 1381.8444196074. The cubic root of 1909494 is about 124.0621869830.

The spelling of 1909494 in words is "one million, nine hundred nine thousand, four hundred ninety-four".