39797645 has 16 divisors (see below), whose sum is σ = 49824768. Its totient is φ = 30481920.

The previous prime is 39797633. The next prime is 39797671. The reversal of 39797645 is 54679793.

It is not a de Polignac number, because 39797645 - 2⁸ = 39797389 is a prime.

It is a super-3 number, since 3×39797645³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 39797593 and 39797602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13712 + ... + 16358.

It is an arithmetic number, because the mean of its divisors is an integer number (3114048).

Almost surely, 2^39797645 is an apocalyptic number.

It is an amenable number.

39797645 is a deficient number, since it is larger than the sum of its proper divisors (10027123).

39797645 is a wasteful number, since it uses less digits than its factorization.

39797645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780.

The product of its digits is 1428840, while the sum is 50.

The square root of 39797645 is about 6308.5374691762. The cubic root of 39797645 is about 341.4175104646.

The spelling of 39797645 in words is "thirty-nine million, seven hundred ninety-seven thousand, six hundred forty-five".