42447599 has 2 divisors, whose sum is σ = 42447600. Its totient is φ = 42447598.

The previous prime is 42447583. The next prime is 42447607. The reversal of 42447599 is 99574424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42447599 - 2⁴ = 42447583 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42447499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21223799 + 21223800.

It is an arithmetic number, because the mean of its divisors is an integer number (21223800).

Almost surely, 2^42447599 is an apocalyptic number.

42447599 is a deficient number, since it is larger than the sum of its proper divisors (1).

42447599 is an equidigital number, since it uses as much as digits as its factorization.

42447599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 44.

The square root of 42447599 is about 6515.1821923873. The cubic root of 42447599 is about 348.8331180810.

The spelling of 42447599 in words is "forty-two million, four hundred forty-seven thousand, five hundred ninety-nine".