1399470 has 16 divisors (see below), whose sum is σ = 3358800. Its totient is φ = 373184.

The previous prime is 1399469. The next prime is 1399471. The reversal of 1399470 is 749931.

It is an interprime number because it is at equal distance from previous prime (1399469) and next prime (1399471).

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399471) 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, 23295 + ... + 23354.

It is an arithmetic number, because the mean of its divisors is an integer number (209925).

2^1399470 is an apocalyptic number.

1399470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1399470 is an abundant number, since it is smaller than the sum of its proper divisors (1959330).

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

1399470 is a wasteful number, since it uses less digits than its factorization.

1399470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46659.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 1399470 is about 1182.9919695416. The cubic root of 1399470 is about 111.8547756373.

The spelling of 1399470 in words is "one million, three hundred ninety-nine thousand, four hundred seventy".