39422561 has 4 divisors (see below), whose sum is σ = 40090800. Its totient is φ = 38754324.

The previous prime is 39422557. The next prime is 39422563. The reversal of 39422561 is 16522493.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16522493 = 13 ⋅1270961.

It is a cyclic number.

It is not a de Polignac number, because 39422561 - 2² = 39422557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39422563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334031 + ... + 334148.

It is an arithmetic number, because the mean of its divisors is an integer number (10022700).

Almost surely, 2^39422561 is an apocalyptic number.

It is an amenable number.

39422561 is a deficient number, since it is larger than the sum of its proper divisors (668239).

39422561 is an equidigital number, since it uses as much as digits as its factorization.

39422561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668238.

The product of its digits is 12960, while the sum is 32.

The square root of 39422561 is about 6278.7388064802. The cubic root of 39422561 is about 340.3415282174.

The spelling of 39422561 in words is "thirty-nine million, four hundred twenty-two thousand, five hundred sixty-one".