1398293 has 8 divisors (see below), whose sum is σ = 1558200. Its totient is φ = 1245888.

The previous prime is 1398289. The next prime is 1398307. The reversal of 1398293 is 3928931.

It can be written as a sum of positive squares in 4 ways, for example, as 10609 + 1387684 = 103^2 + 1178^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1398293 - 2² = 1398289 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398263) 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, 1478 + ... + 2231.

It is an arithmetic number, because the mean of its divisors is an integer number (194775).

2^1398293 is an apocalyptic number.

1398293 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1398293 is a deficient number, since it is larger than the sum of its proper divisors (159907).

1398293 is a wasteful number, since it uses less digits than its factorization.

1398293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3751.

The product of its digits is 11664, while the sum is 35.

The square root of 1398293 is about 1182.4943974497. The cubic root of 1398293 is about 111.8234090018.

The spelling of 1398293 in words is "one million, three hundred ninety-eight thousand, two hundred ninety-three".