1226044405 has 4 divisors (see below), whose sum is σ = 1471253292. Its totient is φ = 980835520.

The previous prime is 1226044399. The next prime is 1226044433. The reversal of 1226044405 is 5044406221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5044406221 = 23917 ⋅210913.

It can be written as a sum of positive squares in 2 ways, for example, as 473584644 + 752459761 = 21762^2 + 27431^2 .

It is not a de Polignac number, because 1226044405 - 2²¹ = 1223947253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122604436 + ... + 122604445.

It is an arithmetic number, because the mean of its divisors is an integer number (367813323).

Almost surely, 2^1226044405 is an apocalyptic number.

It is an amenable number.

1226044405 is a deficient number, since it is larger than the sum of its proper divisors (245208887).

1226044405 is an equidigital number, since it uses as much as digits as its factorization.

1226044405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245208886.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 1226044405 is about 35014.9168926616. The cubic root of 1226044405 is about 1070.2914758958.

It can be divided in two parts, 12260 and 44405, that added together give a palindrome (56665).

The spelling of 1226044405 in words is "one billion, two hundred twenty-six million, forty-four thousand, four hundred five".