801440 has 24 divisors (see below), whose sum is σ = 1893780. Its totient is φ = 320512.

The previous prime is 801421. The next prime is 801461. The reversal of 801440 is 44108.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 795664 + 5776 = 892^2 + 76^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2345 + ... + 2664.

2⁸⁰¹⁴⁴⁰ is an apocalyptic number.

801440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

801440 is an abundant number, since it is smaller than the sum of its proper divisors (1092340).

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

801440 is a wasteful number, since it uses less digits than its factorization.

801440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5024 (or 5016 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 801440 is about 895.2318135545. The cubic root of 801440 is about 92.8874423522.

Adding to 801440 its reverse (44108), we get a palindrome (845548).

The spelling of 801440 in words is "eight hundred one thousand, four hundred forty".