4399400842 has 8 divisors (see below), whose sum is σ = 6635560932. Its totient is φ = 2187547200.

The previous prime is 4399400827. The next prime is 4399400843. The reversal of 4399400842 is 2480049934.

It can be written as a sum of positive squares in 2 ways, for example, as 3752665081 + 646735761 = 61259^2 + 25431^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (4399400843) 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, 6076159 + ... + 6076882.

Almost surely, 2^4399400842 is an apocalyptic number.

4399400842 is a deficient number, since it is larger than the sum of its proper divisors (2236160090).

4399400842 is a wasteful number, since it uses less digits than its factorization.

4399400842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12153224.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 4399400842 is about 66327.9793299932. The cubic root of 4399400842 is about 1638.5681585986.

The spelling of 4399400842 in words is "four billion, three hundred ninety-nine million, four hundred thousand, eight hundred forty-two".