1404163623 has 8 divisors (see below), whose sum is σ = 1872756736. Its totient is φ = 935839800.

The previous prime is 1404163619. The next prime is 1404163627. The reversal of 1404163623 is 3263614041.

It is an interprime number because it is at equal distance from previous prime (1404163619) and next prime (1404163627).

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

It is not a de Polignac number, because 1404163623 - 2² = 1404163619 is a prime.

It is a super-2 number, since 2×1404163623² = 3943350960312972258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1404163627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54823 + ... + 76248.

It is an arithmetic number, because the mean of its divisors is an integer number (234094592).

Almost surely, 2^1404163623 is an apocalyptic number.

1404163623 is a deficient number, since it is larger than the sum of its proper divisors (468593113).

1404163623 is a wasteful number, since it uses less digits than its factorization.

1404163623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134645.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 1404163623 is about 37472.1713141899. The cubic root of 1404163623 is about 1119.7968442638.

Adding to 1404163623 its reverse (3263614041), we get a palindrome (4667777664).

The spelling of 1404163623 in words is "one billion, four hundred four million, one hundred sixty-three thousand, six hundred twenty-three".