1004400423 has 12 divisors (see below), whose sum is σ = 1562400840. Its totient is φ = 618092496.

The previous prime is 1004400421. The next prime is 1004400433. The reversal of 1004400423 is 3240044001.

It is not a de Polignac number, because 1004400423 - 2¹ = 1004400421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1004400396 and 1004400405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004400421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4292193 + ... + 4292426.

It is an arithmetic number, because the mean of its divisors is an integer number (130200070).

Almost surely, 2^1004400423 is an apocalyptic number.

1004400423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1004400423 is a deficient number, since it is larger than the sum of its proper divisors (558000417).

1004400423 is a wasteful number, since it uses less digits than its factorization.

1004400423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8584638 (or 8584635 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1004400423 is about 31692.2770245371. The cubic root of 1004400423 is about 1001.4646613863.

Adding to 1004400423 its reverse (3240044001), we get a palindrome (4244444424).

The spelling of 1004400423 in words is "one billion, four million, four hundred thousand, four hundred twenty-three".