1438897 has 8 divisors (see below), whose sum is σ = 1553256. Its totient is φ = 1327872.

The previous prime is 1438891. The next prime is 1438901. The reversal of 1438897 is 7988341.

It can be written as a sum of positive squares in 4 ways, for example, as 323761 + 1115136 = 569^2 + 1056^2 .

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 1438897 - 2¹¹ = 1436849 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438891) 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, 103 + ... + 1699.

It is an arithmetic number, because the mean of its divisors is an integer number (194157).

2^1438897 is an apocalyptic number.

1438897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1438897 is a deficient number, since it is larger than the sum of its proper divisors (114359).

1438897 is a wasteful number, since it uses less digits than its factorization.

1438897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667.

The product of its digits is 48384, while the sum is 40.

The square root of 1438897 is about 1199.5403286259. The cubic root of 1438897 is about 112.8954838027.

The spelling of 1438897 in words is "one million, four hundred thirty-eight thousand, eight hundred ninety-seven".