38409705 has 24 divisors (see below), whose sum is σ = 66760200. Its totient is φ = 20428800.

The previous prime is 38409689. The next prime is 38409727. The reversal of 38409705 is 50790483.

It can be written as a sum of positive squares in 4 ways, for example, as 660969 + 37748736 = 813^2 + 6144^2 .

It is not a de Polignac number, because 38409705 - 2⁴ = 38409689 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 38409705.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19255 + ... + 21155.

It is an arithmetic number, because the mean of its divisors is an integer number (2781675).

Almost surely, 2^38409705 is an apocalyptic number.

It is an amenable number.

38409705 is a deficient number, since it is larger than the sum of its proper divisors (28350495).

38409705 is a wasteful number, since it uses less digits than its factorization.

38409705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361 (or 2358 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 38409705 is about 6197.5563732813. The cubic root of 38409705 is about 337.4014856503.

The spelling of 38409705 in words is "thirty-eight million, four hundred nine thousand, seven hundred five".