40000799 has 2 divisors, whose sum is σ = 40000800. Its totient is φ = 40000798.

The previous prime is 40000769. The next prime is 40000837. The reversal of 40000799 is 99700004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40000799 - 2¹² = 39996703 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40000729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20000399 + 20000400.

It is an arithmetic number, because the mean of its divisors is an integer number (20000400).

Almost surely, 2^40000799 is an apocalyptic number.

40000799 is a deficient number, since it is larger than the sum of its proper divisors (1).

40000799 is an equidigital number, since it uses as much as digits as its factorization.

40000799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 40000799 is about 6324.6184865176. The cubic root of 40000799 is about 341.9974664381.

It can be divided in two parts, 400007 and 99, that multiplied together give a palindrome (39600693).

The spelling of 40000799 in words is "forty million, seven hundred ninety-nine", and thus it is an aban number.