42808899 has 12 divisors (see below), whose sum is σ = 66397704. Its totient is φ = 24462144.

The previous prime is 42808897. The next prime is 42808937. The reversal of 42808899 is 99880824.

It is not a de Polignac number, because 42808899 - 2¹ = 42808897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42808891) 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, 145462 + ... + 145755.

It is an arithmetic number, because the mean of its divisors is an integer number (5533142).

Almost surely, 2^42808899 is an apocalyptic number.

42808899 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

42808899 is a deficient number, since it is larger than the sum of its proper divisors (23588805).

42808899 is a wasteful number, since it uses less digits than its factorization.

42808899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291234 (or 291227 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 48.

The square root of 42808899 is about 6542.8509840894. The cubic root of 42808899 is about 349.8200408197.

The spelling of 42808899 in words is "forty-two million, eight hundred eight thousand, eight hundred ninety-nine".