38914921 has 8 divisors (see below), whose sum is σ = 41302440. Its totient is φ = 36538368.

The previous prime is 38914891. The next prime is 38914927. The reversal of 38914921 is 12941983.

38914921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 17338896 + 21576025 = 4164^2 + 4645^2 .

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 38914921 - 2⁹ = 38914409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38914927) 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, 5265 + ... + 10273.

It is an arithmetic number, because the mean of its divisors is an integer number (5162805).

Almost surely, 2^38914921 is an apocalyptic number.

It is an amenable number.

38914921 is a deficient number, since it is larger than the sum of its proper divisors (2387519).

38914921 is a wasteful number, since it uses less digits than its factorization.

38914921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5483.

The product of its digits is 15552, while the sum is 37.

The square root of 38914921 is about 6238.1825077502. The cubic root of 38914921 is about 338.8743657228.

The spelling of 38914921 in words is "thirty-eight million, nine hundred fourteen thousand, nine hundred twenty-one".