839606401 has 4 divisors (see below), whose sum is σ = 842012500. Its totient is φ = 837200304.

The previous prime is 839606359. The next prime is 839606419. The reversal of 839606401 is 104606938.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104606938 = 2 ⋅52303469.

It can be written as a sum of positive squares in 2 ways, for example, as 762588225 + 77018176 = 27615^2 + 8776^2 .

It is a cyclic number.

It is not a de Polignac number, because 839606401 - 2¹³ = 839598209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (839606431) 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, 1202526 + ... + 1203223.

It is an arithmetic number, because the mean of its divisors is an integer number (210503125).

Almost surely, 2^839606401 is an apocalyptic number.

It is an amenable number.

839606401 is a deficient number, since it is larger than the sum of its proper divisors (2406099).

839606401 is a wasteful number, since it uses less digits than its factorization.

839606401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2406098.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 839606401 is about 28975.9624689155. The cubic root of 839606401 is about 943.3914016399.

The spelling of 839606401 in words is "eight hundred thirty-nine million, six hundred six thousand, four hundred one".