1120644407 has 4 divisors (see below), whose sum is σ = 1139638440. Its totient is φ = 1101650376.

The previous prime is 1120644401. The next prime is 1120644443. The reversal of 1120644407 is 7044460211.

It is a happy number.

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 1120644407 - 2²² = 1116450103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1120644407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120644401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9496928 + ... + 9497045.

It is an arithmetic number, because the mean of its divisors is an integer number (284909610).

Almost surely, 2^1120644407 is an apocalyptic number.

1120644407 is a deficient number, since it is larger than the sum of its proper divisors (18994033).

1120644407 is an equidigital number, since it uses as much as digits as its factorization.

1120644407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18994032.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 1120644407 is about 33476.0273479396. The cubic root of 1120644407 is about 1038.6979535854.

The spelling of 1120644407 in words is "one billion, one hundred twenty million, six hundred forty-four thousand, four hundred seven".