4405551389 has 2 divisors, whose sum is σ = 4405551390. Its totient is φ = 4405551388.

The previous prime is 4405551379. The next prime is 4405551457. The reversal of 4405551389 is 9831555044.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3337372900 + 1068178489 = 57770^2 + 32683^2 .

It is a cyclic number.

It is not a de Polignac number, because 4405551389 - 2⁴ = 4405551373 is a prime.

It is a super-2 number, since 2×4405551389² = 38817766082239658642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4405551379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2202775694 + 2202775695.

It is an arithmetic number, because the mean of its divisors is an integer number (2202775695).

Almost surely, 2^4405551389 is an apocalyptic number.

It is an amenable number.

4405551389 is a deficient number, since it is larger than the sum of its proper divisors (1).

4405551389 is an equidigital number, since it uses as much as digits as its factorization.

4405551389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432000, while the sum is 44.

The square root of 4405551389 is about 66374.3277856733. The cubic root of 4405551389 is about 1639.3313987114.

The spelling of 4405551389 in words is "four billion, four hundred five million, five hundred fifty-one thousand, three hundred eighty-nine".