4399990819 has 12 divisors (see below), whose sum is σ = 5158665984. Its totient is φ = 3741719184.

The previous prime is 4399990801. The next prime is 4399990823. The reversal of 4399990819 is 9180999934.

It is not a de Polignac number, because 4399990819 - 2⁷ = 4399990691 is a prime.

It is a super-2 number, since 2×4399990819² = 38719838414568581522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4399990879) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 347304 + ... + 359749.

It is an arithmetic number, because the mean of its divisors is an integer number (429888832).

Almost surely, 2^4399990819 is an apocalyptic number.

4399990819 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

4399990819 is a deficient number, since it is larger than the sum of its proper divisors (758675165).

4399990819 is a wasteful number, since it uses less digits than its factorization.

4399990819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707194 (or 707187 counting only the distinct ones).

The product of its (nonzero) digits is 5668704, while the sum is 61.

The square root of 4399990819 is about 66332.4266026805. The cubic root of 4399990819 is about 1638.6414014750.

The spelling of 4399990819 in words is "four billion, three hundred ninety-nine million, nine hundred ninety thousand, eight hundred nineteen".