1391364 has 48 divisors (see below), whose sum is σ = 3888640. Its totient is φ = 427680.

The previous prime is 1391363. The next prime is 1391381. The reversal of 1391364 is 4631931.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1391363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 909 + ... + 1899.

2^1391364 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1391364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1944320).

1391364 is an abundant number, since it is smaller than the sum of its proper divisors (2497276).

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

1391364 is a wasteful number, since it uses less digits than its factorization.

1391364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017 (or 1009 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 1391364 is about 1179.5609352636. The cubic root of 1391364 is about 111.6383958531.

The spelling of 1391364 in words is "one million, three hundred ninety-one thousand, three hundred sixty-four".