39890433241 has 4 divisors (see below), whose sum is σ = 42236929332. Its totient is φ = 37543937152.

The previous prime is 39890433217. The next prime is 39890433299. The reversal of 39890433241 is 14233409893.

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 10682256025 + 29208177216 = 103355^2 + 170904^2 .

It is a cyclic number.

It is not a de Polignac number, because 39890433241 - 2¹³ = 39890425049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39890433191 and 39890433200.

It is not an unprimeable number, because it can be changed into a prime (39890433211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1173248020 + ... + 1173248053.

It is an arithmetic number, because the mean of its divisors is an integer number (10559232333).

Almost surely, 2^39890433241 is an apocalyptic number.

It is an amenable number.

39890433241 is a deficient number, since it is larger than the sum of its proper divisors (2346496091).

39890433241 is a wasteful number, since it uses less digits than its factorization.

39890433241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346496090.

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 39890433241 in words is "thirty-nine billion, eight hundred ninety million, four hundred thirty-three thousand, two hundred forty-one".