1404535421 has 8 divisors (see below), whose sum is σ = 1419228864. Its totient is φ = 1389881920.

The previous prime is 1404535397. The next prime is 1404535463. The reversal of 1404535421 is 1245354041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1404535421 - 2¹⁴ = 1404519037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1404535471) 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, 63506 + ... + 82716.

It is an arithmetic number, because the mean of its divisors is an integer number (177403608).

Almost surely, 2^1404535421 is an apocalyptic number.

It is an amenable number.

1404535421 is a deficient number, since it is larger than the sum of its proper divisors (14693443).

1404535421 is a wasteful number, since it uses less digits than its factorization.

1404535421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19971.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 1404535421 is about 37477.1319740452. The cubic root of 1404535421 is about 1119.8956697566.

Adding to 1404535421 its reverse (1245354041), we get a palindrome (2649889462).

The spelling of 1404535421 in words is "one billion, four hundred four million, five hundred thirty-five thousand, four hundred twenty-one".