39799999 has 8 divisors (see below), whose sum is σ = 40912560. Its totient is φ = 38702400.

The previous prime is 39799987. The next prime is 39800011. The reversal of 39799999 is 99999793.

It is an interprime number because it is at equal distance from previous prime (39799987) and next prime (39800011).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39799999 - 2⁵ = 39799967 is a prime.

It is a Duffinian number.

39799999 is a modest number, since divided by 9999 gives 3979 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 39799999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39794999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1764 + ... + 9094.

It is an arithmetic number, because the mean of its divisors is an integer number (5114070).

Almost surely, 2^39799999 is an apocalyptic number.

39799999 is a deficient number, since it is larger than the sum of its proper divisors (1112561).

39799999 is an equidigital number, since it uses as much as digits as its factorization.

39799999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7481.

The product of its digits is 11160261, while the sum is 64.

The square root of 39799999 is about 6308.7240389797. The cubic root of 39799999 is about 341.4242418593.

The spelling of 39799999 in words is "thirty-nine million, seven hundred ninety-nine thousand, nine hundred ninety-nine".