40280099 has 2 divisors, whose sum is σ = 40280100. Its totient is φ = 40280098.

The previous prime is 40280083. The next prime is 40280117. The reversal of 40280099 is 99008204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40280099 - 2⁴ = 40280083 is a prime.

It is a Chen prime.

It is equal to p_2449661 and since 40280099 and 2449661 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (40280029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20140049 + 20140050.

It is an arithmetic number, because the mean of its divisors is an integer number (20140050).

Almost surely, 2^40280099 is an apocalyptic number.

40280099 is a deficient number, since it is larger than the sum of its proper divisors (1).

40280099 is an equidigital number, since it uses as much as digits as its factorization.

40280099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 40280099 is about 6346.6604604311. The cubic root of 40280099 is about 342.7916041808.

The spelling of 40280099 in words is "forty million, two hundred eighty thousand, ninety-nine".