1223404535 has 16 divisors (see below), whose sum is σ = 1505129472. Its totient is φ = 954067200.

The previous prime is 1223404513. The next prime is 1223404543. The reversal of 1223404535 is 5354043221.

It is a happy number.

It is not a de Polignac number, because 1223404535 - 2¹⁴ = 1223388151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223404498 and 1223404507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453962 + ... + 456648.

It is an arithmetic number, because the mean of its divisors is an integer number (94070592).

Almost surely, 2^1223404535 is an apocalyptic number.

1223404535 is a deficient number, since it is larger than the sum of its proper divisors (281724937).

1223404535 is a wasteful number, since it uses less digits than its factorization.

1223404535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4954.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 1223404535 is about 34977.2002167126. The cubic root of 1223404535 is about 1069.5227542399.

Adding to 1223404535 its reverse (5354043221), we get a palindrome (6577447756).

The spelling of 1223404535 in words is "one billion, two hundred twenty-three million, four hundred four thousand, five hundred thirty-five".