4399990823 has 2 divisors, whose sum is σ = 4399990824. Its totient is φ = 4399990822.

The previous prime is 4399990801. The next prime is 4399990841. The reversal of 4399990823 is 3280999934.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4399990823 - 2¹² = 4399986727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4399990843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2199995411 + 2199995412.

It is an arithmetic number, because the mean of its divisors is an integer number (2199995412).

Almost surely, 2^4399990823 is an apocalyptic number.

4399990823 is a deficient number, since it is larger than the sum of its proper divisors (1).

4399990823 is an equidigital number, since it uses as much as digits as its factorization.

4399990823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3779136, while the sum is 56.

The square root of 4399990823 is about 66332.4266328317. The cubic root of 4399990823 is about 1638.6414019715.

The spelling of 4399990823 in words is "four billion, three hundred ninety-nine million, nine hundred ninety thousand, eight hundred twenty-three".