38406865 has 16 divisors (see below), whose sum is σ = 52985088. Its totient is φ = 26179776.

The previous prime is 38406763. The next prime is 38406883. The reversal of 38406865 is 56860483.

It is not a de Polignac number, because 38406865 - 2¹⁹ = 37882577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2884 + ... + 9226.

It is an arithmetic number, because the mean of its divisors is an integer number (3311568).

Almost surely, 2^38406865 is an apocalyptic number.

38406865 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38406865 is a deficient number, since it is larger than the sum of its proper divisors (14578223).

38406865 is a wasteful number, since it uses less digits than its factorization.

38406865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6528.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 38406865 is about 6197.3272464830. The cubic root of 38406865 is about 337.3931696632.

The spelling of 38406865 in words is "thirty-eight million, four hundred six thousand, eight hundred sixty-five".