4396421849 has 4 divisors (see below), whose sum is σ = 4396669236. Its totient is φ = 4396174464.

The previous prime is 4396421831. The next prime is 4396421873. The reversal of 4396421849 is 9481246934.

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 3500497225 + 895924624 = 59165^2 + 29932^2 .

It is a cyclic number.

It is not a de Polignac number, because 4396421849 - 2³² = 101454553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4396421797 and 4396421806.

It is not an unprimeable number, because it can be changed into a prime (4396421899) 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, 94784 + ... + 133329.

It is an arithmetic number, because the mean of its divisors is an integer number (1099167309).

Almost surely, 2^4396421849 is an apocalyptic number.

It is an amenable number.

4396421849 is a deficient number, since it is larger than the sum of its proper divisors (247387).

4396421849 is a wasteful number, since it uses less digits than its factorization.

4396421849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247386.

The product of its digits is 1492992, while the sum is 50.

The square root of 4396421849 is about 66305.5189935197. The cubic root of 4396421849 is about 1638.1982305539.

The spelling of 4396421849 in words is "four billion, three hundred ninety-six million, four hundred twenty-one thousand, eight hundred forty-nine".