1404001 has 4 divisors (see below), whose sum is σ = 1418004. Its totient is φ = 1390000.

The previous prime is 1403981. The next prime is 1404059. The reversal of 1404001 is 1004041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1004041 = 101 ⋅9941.

It can be written as a sum of positive squares in 2 ways, for example, as 1263376 + 140625 = 1124^2 + 375^2 .

It is a cyclic number.

It is not a de Polignac number, because 1404001 - 2⁹ = 1403489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1404061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6850 + ... + 7051.

It is an arithmetic number, because the mean of its divisors is an integer number (354501).

2^1404001 is an apocalyptic number.

It is an amenable number.

1404001 is a deficient number, since it is larger than the sum of its proper divisors (14003).

1404001 is a wasteful number, since it uses less digits than its factorization.

1404001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14002.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1404001 is about 1184.9054814626. The cubic root of 1404001 is about 111.9753612893.

Adding to 1404001 its reverse (1004041), we get a palindrome (2408042).

The spelling of 1404001 in words is "one million, four hundred four thousand, one".