38907705 has 16 divisors (see below), whose sum is σ = 64399680. Its totient is φ = 20035008.

The previous prime is 38907677. The next prime is 38907707. The reversal of 38907705 is 50770983.

It is not a de Polignac number, because 38907705 - 2⁶ = 38907641 is a prime.

It is a super-3 number, since 3×38907705³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (38907707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44287 + ... + 45156.

It is an arithmetic number, because the mean of its divisors is an integer number (4024980).

Almost surely, 2^38907705 is an apocalyptic number.

It is an amenable number.

38907705 is a deficient number, since it is larger than the sum of its proper divisors (25491975).

38907705 is a wasteful number, since it uses less digits than its factorization.

38907705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89480.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 38907705 is about 6237.6041073476. The cubic root of 38907705 is about 338.8534185854.

The spelling of 38907705 in words is "thirty-eight million, nine hundred seven thousand, seven hundred five".