1404039 has 32 divisors (see below), whose sum is σ = 2383360. Its totient is φ = 715392.

The previous prime is 1403981. The next prime is 1404059. The reversal of 1404039 is 9304041.

It is not a de Polignac number, because 1404039 - 2¹² = 1399943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1404059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10032 + ... + 10170.

It is an arithmetic number, because the mean of its divisors is an integer number (74480).

2^1404039 is an apocalyptic number.

1404039 is a deficient number, since it is larger than the sum of its proper divisors (979321).

1404039 is a wasteful number, since it uses less digits than its factorization.

1404039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1404039 is about 1184.9215163883. The cubic root of 1404039 is about 111.9763715036.

The spelling of 1404039 in words is "one million, four hundred four thousand, thirty-nine".