42446399 has 8 divisors (see below), whose sum is σ = 47309040. Its totient is φ = 37846656.

The previous prime is 42446389. The next prime is 42446407. The reversal of 42446399 is 99364424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42446399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42446389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65384 + ... + 66029.

It is an arithmetic number, because the mean of its divisors is an integer number (5913630).

Almost surely, 2^42446399 is an apocalyptic number.

42446399 is a deficient number, since it is larger than the sum of its proper divisors (4862641).

42446399 is a wasteful number, since it uses less digits than its factorization.

42446399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131449.

The product of its digits is 186624, while the sum is 41.

The square root of 42446399 is about 6515.0900991467. The cubic root of 42446399 is about 348.8298308618.

The spelling of 42446399 in words is "forty-two million, four hundred forty-six thousand, three hundred ninety-nine".