1391430 has 16 divisors (see below), whose sum is σ = 3339504. Its totient is φ = 371040.

The previous prime is 1391419. The next prime is 1391441. The reversal of 1391430 is 341931.

It is an interprime number because it is at equal distance from previous prime (1391419) and next prime (1391441).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1391397 and 1391406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23161 + ... + 23220.

It is an arithmetic number, because the mean of its divisors is an integer number (208719).

2^1391430 is an apocalyptic number.

1391430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1391430 is an abundant number, since it is smaller than the sum of its proper divisors (1948074).

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

1391430 is a wasteful number, since it uses less digits than its factorization.

1391430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46391.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 1391430 is about 1179.5889114433. The cubic root of 1391430 is about 111.6401610316.

The spelling of 1391430 in words is "one million, three hundred ninety-one thousand, four hundred thirty".