1349778 has 16 divisors (see below), whose sum is σ = 2817216. Its totient is φ = 430320.

The previous prime is 1349773. The next prime is 1349807. The reversal of 1349778 is 8779431.

It is not an unprimeable number, because it can be changed into a prime (1349773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4753 + ... + 5028.

It is an arithmetic number, because the mean of its divisors is an integer number (176076).

2^1349778 is an apocalyptic number.

1349778 is an abundant number, since it is smaller than the sum of its proper divisors (1467438).

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

1349778 is a wasteful number, since it uses less digits than its factorization.

1349778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9809.

The product of its digits is 42336, while the sum is 39.

The square root of 1349778 is about 1161.7994663452. The cubic root of 1349778 is about 110.5148864420.

The spelling of 1349778 in words is "one million, three hundred forty-nine thousand, seven hundred seventy-eight".