4399069 has 4 divisors (see below), whose sum is σ = 4416444. Its totient is φ = 4381696.

The previous prime is 4399067. The next prime is 4399079. The reversal of 4399069 is 9609934.

4399069 = T₄₁ + T₄₂ + ... + T₂₉₇.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1996569 + 2402500 = 1413^2 + 1550^2 .

It is a cyclic number.

It is not a de Polignac number, because 4399069 - 2¹ = 4399067 is a prime.

It is a super-2 number, since 2×4399069² = 38703616133522, which contains 22 as substring.

It is a Duffinian number.

4399069 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4399061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8302 + ... + 8815.

It is an arithmetic number, because the mean of its divisors is an integer number (1104111).

Almost surely, 2^4399069 is an apocalyptic number.

It is an amenable number.

4399069 is a deficient number, since it is larger than the sum of its proper divisors (17375).

4399069 is a wasteful number, since it uses less digits than its factorization.

4399069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17374.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 4399069 is about 2097.3957661824. The cubic root of 4399069 is about 163.8526959094.

The spelling of 4399069 in words is "four million, three hundred ninety-nine thousand, sixty-nine".