38919901 has 8 divisors (see below), whose sum is σ = 39836160. Its totient is φ = 38007408.

The previous prime is 38919899. The next prime is 38919913. The reversal of 38919901 is 10991983.

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 38919901 - 2¹ = 38919899 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 (38919941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36940 + ... + 37978.

It is an arithmetic number, because the mean of its divisors is an integer number (4979520).

Almost surely, 2^38919901 is an apocalyptic number.

It is an amenable number.

38919901 is a deficient number, since it is larger than the sum of its proper divisors (916259).

38919901 is a wasteful number, since it uses less digits than its factorization.

38919901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 38919901 is about 6238.5816497021. The cubic root of 38919901 is about 338.8888205241. Note that the first 4 decimals are identical.

The spelling of 38919901 in words is "thirty-eight million, nine hundred nineteen thousand, nine hundred one".