38405697 has 16 divisors (see below), whose sum is σ = 55987392. Its totient is φ = 23224320.

The previous prime is 38405681. The next prime is 38405711. The reversal of 38405697 is 79650483.

It is a happy number.

It is not a de Polignac number, because 38405697 - 2⁴ = 38405681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38405797) 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, 18033 + ... + 20049.

It is an arithmetic number, because the mean of its divisors is an integer number (3499212).

Almost surely, 2^38405697 is an apocalyptic number.

It is an amenable number.

38405697 is a deficient number, since it is larger than the sum of its proper divisors (17581695).

38405697 is a wasteful number, since it uses less digits than its factorization.

38405697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 38405697 is about 6197.2330115948. The cubic root of 38405697 is about 337.3897494481.

The spelling of 38405697 in words is "thirty-eight million, four hundred five thousand, six hundred ninety-seven".