38985405 has 32 divisors (see below), whose sum is σ = 64067328. Its totient is φ = 20236800.

The previous prime is 38985389. The next prime is 38985407. The reversal of 38985405 is 50458983.

It is not a de Polignac number, because 38985405 - 2⁴ = 38985389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38985407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125200 + ... + 125510.

It is an arithmetic number, because the mean of its divisors is an integer number (2002104).

Almost surely, 2^38985405 is an apocalyptic number.

It is an amenable number.

38985405 is a deficient number, since it is larger than the sum of its proper divisors (25081923).

38985405 is a wasteful number, since it uses less digits than its factorization.

38985405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 38985405 is about 6243.8293538501. The cubic root of 38985405 is about 339.0788358344.

The spelling of 38985405 in words is "thirty-eight million, nine hundred eighty-five thousand, four hundred five".