39960173407 has 18 divisors (see below), whose sum is σ = 51094302504. Its totient is φ = 31137792840.

The previous prime is 39960173339. The next prime is 39960173411. The reversal of 39960173407 is 70437106993.

It is a happy number.

It is not a de Polignac number, because 39960173407 - 2¹¹ = 39960171359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39960173417) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3363963 + ... + 3375820.

Almost surely, 2^39960173407 is an apocalyptic number.

39960173407 is a deficient number, since it is larger than the sum of its proper divisors (11134129097).

39960173407 is a wasteful number, since it uses less digits than its factorization.

39960173407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6739819 (or 6739801 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 49.

The spelling of 39960173407 in words is "thirty-nine billion, nine hundred sixty million, one hundred seventy-three thousand, four hundred seven".