1391480 has 32 divisors (see below), whose sum is σ = 3207600. Its totient is φ = 542976.

The previous prime is 1391479. The next prime is 1391483. The reversal of 1391480 is 841931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1391483) 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, 1316 + ... + 2124.

2^1391480 is an apocalyptic number.

1391480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1391480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1603800).

1391480 is an abundant number, since it is smaller than the sum of its proper divisors (1816120).

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

1391480 is a wasteful number, since it uses less digits than its factorization.

1391480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863 (or 859 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1391480 is about 1179.6101050771. The cubic root of 1391480 is about 111.6414982509.

The spelling of 1391480 in words is "one million, three hundred ninety-one thousand, four hundred eighty".