38942409 has 8 divisors (see below), whose sum is σ = 56643552. Its totient is φ = 23601440.

The previous prime is 38942383. The next prime is 38942411. The reversal of 38942409 is 90424983.

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 38942409 - 2¹⁵ = 38909641 is a prime.

It is a super-2 number, since 2×38942409² = 3033022437446562, which contains 22 as substring.

It is a zygodrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (38942489) 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, 590004 + ... + 590069.

It is an arithmetic number, because the mean of its divisors is an integer number (7080444).

Almost surely, 2^38942409 is an apocalyptic number.

It is an amenable number.

38942409 is a deficient number, since it is larger than the sum of its proper divisors (17701143).

38942409 is a wasteful number, since it uses less digits than its factorization.

38942409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180087.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 38942409 is about 6240.3853246414. The cubic root of 38942409 is about 338.9541362062.

The spelling of 38942409 in words is "thirty-eight million, nine hundred forty-two thousand, four hundred nine".