42489399 has 8 divisors (see below), whose sum is σ = 57172720. Its totient is φ = 28066176.

The previous prime is 42489397. The next prime is 42489427. The reversal of 42489399 is 99398424.

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

It is not a de Polignac number, because 42489399 - 2¹ = 42489397 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 (42489397) 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, 64642 + ... + 65295.

It is an arithmetic number, because the mean of its divisors is an integer number (7146590).

Almost surely, 2^42489399 is an apocalyptic number.

42489399 is a deficient number, since it is larger than the sum of its proper divisors (14683321).

42489399 is a wasteful number, since it uses less digits than its factorization.

42489399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130049.

The product of its digits is 559872, while the sum is 48.

The square root of 42489399 is about 6518.3892949102. The cubic root of 42489399 is about 348.9475842388.

The spelling of 42489399 in words is "forty-two million, four hundred eighty-nine thousand, three hundred ninety-nine".