38423845 has 4 divisors (see below), whose sum is σ = 46108620. Its totient is φ = 30739072.

The previous prime is 38423843. The next prime is 38423873. The reversal of 38423845 is 54832483.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25341156 + 13082689 = 5034^2 + 3617^2 .

It is a cyclic number.

It is not a de Polignac number, because 38423845 - 2¹ = 38423843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38423843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3842380 + ... + 3842389.

It is an arithmetic number, because the mean of its divisors is an integer number (11527155).

Almost surely, 2^38423845 is an apocalyptic number.

It is an amenable number.

38423845 is a deficient number, since it is larger than the sum of its proper divisors (7684775).

38423845 is an equidigital number, since it uses as much as digits as its factorization.

38423845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7684774.

The product of its digits is 92160, while the sum is 37.

The square root of 38423845 is about 6198.6970405078. The cubic root of 38423845 is about 337.4428837960.

The spelling of 38423845 in words is "thirty-eight million, four hundred twenty-three thousand, eight hundred forty-five".