1226044403 has 4 divisors (see below), whose sum is σ = 1298164680. Its totient is φ = 1153924128.

The previous prime is 1226044399. The next prime is 1226044433. The reversal of 1226044403 is 3044406221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1226044403 - 2² = 1226044399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226044433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36060113 + ... + 36060146.

It is an arithmetic number, because the mean of its divisors is an integer number (324541170).

Almost surely, 2^1226044403 is an apocalyptic number.

1226044403 is a deficient number, since it is larger than the sum of its proper divisors (72120277).

1226044403 is an equidigital number, since it uses as much as digits as its factorization.

1226044403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72120276.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 1226044403 is about 35014.9168641024. The cubic root of 1226044403 is about 1070.2914753139.

The spelling of 1226044403 in words is "one billion, two hundred twenty-six million, forty-four thousand, four hundred three".