1409309780 has 48 divisors (see below), whose sum is σ = 2983163904. Its totient is φ = 559248000.

The previous prime is 1409309777. The next prime is 1409309801. The reversal of 1409309780 is 879039041.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1922294 + ... + 1923026.

It is an arithmetic number, because the mean of its divisors is an integer number (62149248).

Almost surely, 2^1409309780 is an apocalyptic number.

1409309780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1409309780 is an abundant number, since it is smaller than the sum of its proper divisors (1573854124).

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

1409309780 is a wasteful number, since it uses less digits than its factorization.

1409309780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376 (or 1374 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 1409309780 is about 37540.7748987684. The cubic root of 1409309780 is about 1121.1631676457.

The spelling of 1409309780 in words is "one billion, four hundred nine million, three hundred nine thousand, seven hundred eighty".