38426409 has 24 divisors (see below), whose sum is σ = 67167360. Its totient is φ = 20665728.

The previous prime is 38426369. The next prime is 38426447. The reversal of 38426409 is 90462483.

It is a happy number.

38426409 is a `hidden beast` number, since 3 + 8 + 4 + 2 + 640 + 9 = 666.

It is not a de Polignac number, because 38426409 - 2²⁰ = 37377833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38426489) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16869 + ... + 19010.

It is an arithmetic number, because the mean of its divisors is an integer number (2798640).

Almost surely, 2^38426409 is an apocalyptic number.

It is an amenable number.

38426409 is a deficient number, since it is larger than the sum of its proper divisors (28740951).

38426409 is a wasteful number, since it uses less digits than its factorization.

38426409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35909 (or 35906 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 38426409 is about 6198.9038547150. The cubic root of 38426409 is about 337.4503894157.

The spelling of 38426409 in words is "thirty-eight million, four hundred twenty-six thousand, four hundred nine".