38400079 has 4 divisors (see below), whose sum is σ = 38455560. Its totient is φ = 38344600.

The previous prime is 38400077. The next prime is 38400107. The reversal of 38400079 is 97000483.

It is a happy number.

38400079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38400079 - 2¹ = 38400077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38400079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38400071) 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 in 3 ways as a sum of consecutive naturals, for example, 26689 + ... + 28090.

It is an arithmetic number, because the mean of its divisors is an integer number (9613890).

Almost surely, 2^38400079 is an apocalyptic number.

38400079 is a deficient number, since it is larger than the sum of its proper divisors (55481).

38400079 is an equidigital number, since it uses as much as digits as its factorization.

38400079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55480.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 38400079 is about 6196.7797282137. The cubic root of 38400079 is about 337.3732974788.

The spelling of 38400079 in words is "thirty-eight million, four hundred thousand, seventy-nine".