1409780 has 12 divisors (see below), whose sum is σ = 2960580. Its totient is φ = 563904.

The previous prime is 1409773. The next prime is 1409783. The reversal of 1409780 is 879041.

It can be written as a sum of positive squares in 2 ways, for example, as 252004 + 1157776 = 502^2 + 1076^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1409783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35225 + ... + 35264.

It is an arithmetic number, because the mean of its divisors is an integer number (246715).

2^1409780 is an apocalyptic number.

1409780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1409780 is an abundant number, since it is smaller than the sum of its proper divisors (1550800).

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

1409780 is a wasteful number, since it uses less digits than its factorization.

1409780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70498 (or 70496 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1409780 is about 1187.3415683787. The cubic root of 1409780 is about 112.1287846816.

The spelling of 1409780 in words is "one million, four hundred nine thousand, seven hundred eighty".