40215283 has 2 divisors, whose sum is σ = 40215284. Its totient is φ = 40215282.

The previous prime is 40215269. The next prime is 40215347. The reversal of 40215283 is 38251204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40215283 - 2¹⁷ = 40084211 is a prime.

It is not a weakly prime, because it can be changed into another prime (40215233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20107641 + 20107642.

It is an arithmetic number, because the mean of its divisors is an integer number (20107642).

Almost surely, 2^40215283 is an apocalyptic number.

40215283 is a deficient number, since it is larger than the sum of its proper divisors (1).

40215283 is an equidigital number, since it uses as much as digits as its factorization.

40215283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 40215283 is about 6341.5520970816. The cubic root of 40215283 is about 342.6076398140.

Adding to 40215283 its reverse (38251204), we get a palindrome (78466487).

The spelling of 40215283 in words is "forty million, two hundred fifteen thousand, two hundred eighty-three".