1398470 has 16 divisors (see below), whose sum is σ = 2542320. Its totient is φ = 553824.

The previous prime is 1398451. The next prime is 1398473. The reversal of 1398470 is 748931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398473) by changing a digit.

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, 449 + ... + 1731.

It is an arithmetic number, because the mean of its divisors is an integer number (158895).

2^1398470 is an apocalyptic number.

1398470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1398470 is a deficient number, since it is larger than the sum of its proper divisors (1143850).

1398470 is a wasteful number, since it uses less digits than its factorization.

1398470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1398470 is about 1182.5692368737. The cubic root of 1398470 is about 111.8281271136.

The spelling of 1398470 in words is "one million, three hundred ninety-eight thousand, four hundred seventy".