1438900 has 18 divisors (see below), whose sum is σ = 3122630. Its totient is φ = 575520.

The previous prime is 1438891. The next prime is 1438901. The reversal of 1438900 is 98341.

It can be written as a sum of positive squares in 3 ways, for example, as 27556 + 1411344 = 166^2 + 1188^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7095 + ... + 7294.

2^1438900 is an apocalyptic number.

1438900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1438900 is an abundant number, since it is smaller than the sum of its proper divisors (1683730).

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

1438900 is a wasteful number, since it uses less digits than its factorization.

1438900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14403 (or 14396 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1438900 is about 1199.5415791043. The cubic root of 1438900 is about 112.8955622624.

The spelling of 1438900 in words is "one million, four hundred thirty-eight thousand, nine hundred".