38998817 has 8 divisors (see below), whose sum is σ = 45816960. Its totient is φ = 32726160.

The previous prime is 38998801. The next prime is 38998847. The reversal of 38998817 is 71889983.

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 38998817 - 2⁴ = 38998801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38998847) 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, 136217 + ... + 136502.

It is an arithmetic number, because the mean of its divisors is an integer number (5727120).

Almost surely, 2^38998817 is an apocalyptic number.

It is an amenable number.

38998817 is a deficient number, since it is larger than the sum of its proper divisors (6818143).

38998817 is a wasteful number, since it uses less digits than its factorization.

38998817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272743.

The product of its digits is 870912, while the sum is 53.

The square root of 38998817 is about 6244.9032818772. The cubic root of 38998817 is about 339.1177153752.

The spelling of 38998817 in words is "thirty-eight million, nine hundred ninety-eight thousand, eight hundred seventeen".