39697005 has 16 divisors (see below), whose sum is σ = 63705600. Its totient is φ = 21108288.

The previous prime is 39697003. The next prime is 39697033. The reversal of 39697005 is 50079693.

It is not a de Polignac number, because 39697005 - 2¹ = 39697003 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 (39697001) 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, 1444 + ... + 9026.

It is an arithmetic number, because the mean of its divisors is an integer number (3981600).

Almost surely, 2^39697005 is an apocalyptic number.

It is an amenable number.

39697005 is a deficient number, since it is larger than the sum of its proper divisors (24008595).

39697005 is a wasteful number, since it uses less digits than its factorization.

39697005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7940.

The product of its (nonzero) digits is 51030, while the sum is 39.

The square root of 39697005 is about 6300.5559278527. Note that the first 3 decimals coincide. The cubic root of 39697005 is about 341.1294761488.

The spelling of 39697005 in words is "thirty-nine million, six hundred ninety-seven thousand, five".