1223440401 has 8 divisors (see below), whose sum is σ = 1631751264. Its totient is φ = 815378240.

The previous prime is 1223440397. The next prime is 1223440417. The reversal of 1223440401 is 1040443221.

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

It is a cyclic number.

It is not a de Polignac number, because 1223440401 - 2² = 1223440397 is a prime.

It is a super-3 number, since 3×1223440401³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1223440481) 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, 50376 + ... + 70601.

It is an arithmetic number, because the mean of its divisors is an integer number (203968908).

Almost surely, 2^1223440401 is an apocalyptic number.

It is an amenable number.

1223440401 is a deficient number, since it is larger than the sum of its proper divisors (408310863).

1223440401 is a wasteful number, since it uses less digits than its factorization.

1223440401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124351.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1223440401 is about 34977.7129183713. The cubic root of 1223440401 is about 1069.5332057101.

Adding to 1223440401 its reverse (1040443221), we get a palindrome (2263883622).

The spelling of 1223440401 in words is "one billion, two hundred twenty-three million, four hundred forty thousand, four hundred one".