39725973 has 24 divisors (see below), whose sum is σ = 67698176. Its totient is φ = 21967200.

The previous prime is 39725963. The next prime is 39725993. The reversal of 39725973 is 37952793.

39725973 is a `hidden beast` number, since 397 + 259 + 7 + 3 = 666.

It is not a de Polignac number, because 39725973 - 2¹³ = 39717781 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 (39725963) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8218 + ... + 12123.

Almost surely, 2^39725973 is an apocalyptic number.

It is an amenable number.

39725973 is a deficient number, since it is larger than the sum of its proper divisors (27972203).

39725973 is a wasteful number, since it uses less digits than its factorization.

39725973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20385 (or 20382 counting only the distinct ones).

The product of its digits is 357210, while the sum is 45.

The square root of 39725973 is about 6302.8543533862. The cubic root of 39725973 is about 341.2124331709.

The spelling of 39725973 in words is "thirty-nine million, seven hundred twenty-five thousand, nine hundred seventy-three".