39797140 has 24 divisors (see below), whose sum is σ = 84389760. Its totient is φ = 15763488.

The previous prime is 39797111. The next prime is 39797141. The reversal of 39797140 is 4179793.

It is a junction number, because it is equal to n+sod(n) for n = 39797093 and 39797102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39797141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7600 + ... + 11719.

It is an arithmetic number, because the mean of its divisors is an integer number (3516240).

Almost surely, 2^39797140 is an apocalyptic number.

It is an amenable number.

39797140 is an abundant number, since it is smaller than the sum of its proper divisors (44592620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39797140 is a wasteful number, since it uses less digits than its factorization.

39797140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19431 (or 19429 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 39797140 is about 6308.4974439243. The cubic root of 39797140 is about 341.4160663542.

The spelling of 39797140 in words is "thirty-nine million, seven hundred ninety-seven thousand, one hundred forty".