1409820 has 24 divisors (see below), whose sum is σ = 3947664. Its totient is φ = 375936.

The previous prime is 1409803. The next prime is 1409833. The reversal of 1409820 is 289041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11689 + ... + 11808.

It is an arithmetic number, because the mean of its divisors is an integer number (164486).

2^1409820 is an apocalyptic number.

1409820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1409820 is an abundant number, since it is smaller than the sum of its proper divisors (2537844).

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

1409820 is a wasteful number, since it uses less digits than its factorization.

1409820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23509 (or 23507 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1409820 is about 1187.3584126118. The cubic root of 1409820 is about 112.1298451565.

The spelling of 1409820 in words is "one million, four hundred nine thousand, eight hundred twenty".