40398233 has 2 divisors, whose sum is σ = 40398234. Its totient is φ = 40398232.

The previous prime is 40398229. The next prime is 40398263. The reversal of 40398233 is 33289304.

It is a happy number.

40398233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29560969 + 10837264 = 5437^2 + 3292^2 .

It is a cyclic number.

It is not a de Polignac number, because 40398233 - 2² = 40398229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40398233.

It is not a weakly prime, because it can be changed into another prime (40398203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20199116 + 20199117.

It is an arithmetic number, because the mean of its divisors is an integer number (20199117).

Almost surely, 2^40398233 is an apocalyptic number.

It is an amenable number.

40398233 is a deficient number, since it is larger than the sum of its proper divisors (1).

40398233 is an equidigital number, since it uses as much as digits as its factorization.

40398233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 40398233 is about 6355.9604309656. The cubic root of 40398233 is about 343.1263916675.

The spelling of 40398233 in words is "forty million, three hundred ninety-eight thousand, two hundred thirty-three".