40399363 has 2 divisors, whose sum is σ = 40399364. Its totient is φ = 40399362.

The previous prime is 40399343. The next prime is 40399369. The reversal of 40399363 is 36399304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40399363 - 2²¹ = 38302211 is a prime.

It is not a weakly prime, because it can be changed into another prime (40399369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20199681 + 20199682.

It is an arithmetic number, because the mean of its divisors is an integer number (20199682).

Almost surely, 2^40399363 is an apocalyptic number.

40399363 is a deficient number, since it is larger than the sum of its proper divisors (1).

40399363 is an equidigital number, since it uses as much as digits as its factorization.

40399363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 37.

The square root of 40399363 is about 6356.0493232825. The cubic root of 40399363 is about 343.1295908933.

The spelling of 40399363 in words is "forty million, three hundred ninety-nine thousand, three hundred sixty-three".