38890805 has 8 divisors (see below), whose sum is σ = 46978944. Its totient is φ = 30906000.

The previous prime is 38890799. The next prime is 38890807. The reversal of 38890805 is 50809883.

38890805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 38890805 - 2⁶ = 38890741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38890807) 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 7 ways as a sum of consecutive naturals, for example, 25001 + ... + 26510.

It is an arithmetic number, because the mean of its divisors is an integer number (5872368).

Almost surely, 2^38890805 is an apocalyptic number.

It is an amenable number.

38890805 is a deficient number, since it is larger than the sum of its proper divisors (8088139).

38890805 is a wasteful number, since it uses less digits than its factorization.

38890805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51667.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 38890805 is about 6236.2492734014. The cubic root of 38890805 is about 338.8043498803.

The spelling of 38890805 in words is "thirty-eight million, eight hundred ninety thousand, eight hundred five".