42438799 has 12 divisors (see below), whose sum is σ = 48240696. Its totient is φ = 37108368.

The previous prime is 42438793. The next prime is 42438833. The reversal of 42438799 is 99783424.

It is a happy number.

It is not a de Polignac number, because 42438799 - 2¹⁵ = 42406031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42438793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172 + ... + 9214.

It is an arithmetic number, because the mean of its divisors is an integer number (4020058).

Almost surely, 2^42438799 is an apocalyptic number.

42438799 is a deficient number, since it is larger than the sum of its proper divisors (5801897).

42438799 is a wasteful number, since it uses less digits than its factorization.

42438799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9094 (or 9075 counting only the distinct ones).

The product of its digits is 435456, while the sum is 46.

The square root of 42438799 is about 6514.5068117241. The cubic root of 42438799 is about 348.8090103680.

The spelling of 42438799 in words is "forty-two million, four hundred thirty-eight thousand, seven hundred ninety-nine".